Best and Worst Months to Visit Bilbao: Weather and Seasonal Guide

Quick Weather Answer: Best and Worst Time to Visit Bilbao

The best time to visit Bilbao for weather is usually April, when average daytime temperatures are around 59F (15C) and nights are near 51F (11C). The worst time to visit Bilbao is usually January, because the weather is less comfortable for long walks, outdoor sightseeing, and casual transit-heavy days.

• Best month for weather: April
• Worst month for weather: January
• Most comfortable season: Summer
• Hottest month: August, with average highs near 74F (24C)
• Coldest month: February, with average lows near 47F (8C)
• Rainiest month: November, with about 5.9 inches of rain
• Driest month: August, with about 1.4 inches of precipitation
• Most unpredictable weather period: the wettest winter months
• Best weather for a first-time trip: April, May, and June

What Is the Weather Like in Bilbao?

Bilbao has a relatively mild maritime climate, so extreme temperatures are less common than gray skies, wind, rain, and quick day-to-day changes. The Bilbao climate by month shows average highs from about 54F (12C) in the coolest part of the year to about 74F (24C) in the hottest part. Annual precipitation averages roughly 38.8 inches.

Weather in Bilbao changes the feel of the city because this is a place where comfort depends on more than the number on a forecast. A mild month can make metro transfers, neighborhood walks, outdoor meals, and photography feel easy. A difficult month can make the same itinerary feel slower, sweatier, colder, wetter, or more dependent on indoor breaks.

Best Month to Visit Bilbao for Weather

April is the best month to visit Bilbao for weather in a typical year. Average daytime highs are near 59F (15C), while nights are around 51F (11C). Precipitation averages 3.1 inches, so the month is usually more comfortable than the wetter, hotter, or colder parts of the year.

What makes April stand out is balance. It is not necessarily perfect every day, but it usually gives travelers the best combination of outdoor comfort, manageable weather risk, and enough flexibility for a first-time trip. If hotel prices or crowds rise during this period, that popularity is at least partly weather-driven.

Worst Month to Visit Bilbao for Weather

January is the worst month to visit Bilbao from a pure weather perspective. Average highs are around 54F (12C), and nights are near 47F (8C). The month also brings moderate rain, averaging about 4.8 inches, which can make long outdoor days less comfortable.

The issue is not one dramatic hazard but the overall comfort level. The month is simply less easy than the better parts of the year. Lower hotel prices or fewer visitors can make January acceptable for flexible travelers, but it is not the month I would choose for the best weather in Bilbao.

Bilbao Weather by Season

Spring Weather in Bilbao

In Bilbao, spring usually means March, April, and May. Daytime highs typically run from 57F (14C) to 63F (17C), with nights from about 49F (9C) to 56F (13C). Across the season, precipitation averages around 8.7 inches. This is one of the more comfortable stretches of the year for walking, transit transfers, outdoor meals, and photography. The best spring month for weather is usually April, while March is the least comfortable part of the season.

Summer Weather in Bilbao

In Bilbao, summer usually means June, July, and August. Daytime highs typically run from 69F (21C) to 74F (24C), with nights from about 61F (16C) to 66F (19C). Across the season, precipitation averages around 5.1 inches. This is one of the more comfortable stretches of the year for walking, transit transfers, outdoor meals, and photography. The best summer month for weather is usually June, while June is the least comfortable part of the season.

Fall Weather in Bilbao

In Bilbao, fall usually means September, October, and November. Daytime highs typically run from 59F (15C) to 72F (22C), with nights from about 53F (11C) to 64F (18C). Across the season, precipitation averages around 11.9 inches. This is one of the more comfortable stretches of the year for walking, transit transfers, outdoor meals, and photography. The best fall month for weather is usually September, while November is the least comfortable part of the season.

Winter Weather in Bilbao

In Bilbao, winter usually means December, January, and February. Daytime highs typically run from 54F (12C) to 55F (13C), with nights from about 47F (8C) to 49F (9C). Across the season, precipitation averages around 13.1 inches. Rain and humidity shape the season, so outdoor plans need more flexibility than the temperature alone suggests. The best winter month for weather is usually February, while January is the least comfortable part of the season.

Bilbao Weather by Month: What to Expect

January in Bilbao

January in Bilbao typically brings daytime highs around 54F (12C) and nighttime lows near 47F (8C). Expect moderate rain, averaging about 4.8 inches, and average winds near 12 mph. In real life, the weather is manageable but not effortless, especially if wind, gray skies, or quick temperature changes show up.

Outdoor comfort is still workable, but less reliable than the better months for most travelers. Pack a warm jacket, layers, a compact umbrella or rain shell. Verdict: January is the weakest weather month in Bilbao, even if prepared travelers can still make it work.

February in Bilbao

February in Bilbao typically brings daytime highs around 54F (12C) and nighttime lows near 47F (8C). Expect moderate rain, averaging about 3.5 inches, and average winds near 11 mph. In real life, the weather is manageable but not effortless, especially if wind, gray skies, or quick temperature changes show up.

Outdoor comfort is very comfortable for most travelers. Pack a warm jacket, layers, a compact umbrella or rain shell. Verdict: February is a good month for weather in Bilbao.

March in Bilbao

March in Bilbao typically brings daytime highs around 57F (14C) and nighttime lows near 49F (9C). Expect moderate rain, averaging about 3.2 inches, and average winds near 10 mph. In real life, the month feels usable but changeable, with enough mild weather for outdoor plans and enough cool or wet spells to require backup layers.

Outdoor comfort is very comfortable for most travelers. Pack a warm jacket, layers, a compact umbrella or rain shell. Verdict: March is a good month for weather in Bilbao.

April in Bilbao

April in Bilbao typically brings daytime highs around 59F (15C) and nighttime lows near 51F (11C). Expect moderate rain, averaging about 3.1 inches, and average winds near 9 mph. In real life, the month feels usable but changeable, with enough mild weather for outdoor plans and enough cool or wet spells to require backup layers.

Outdoor comfort is the best of the year for most travelers. Pack comfortable layers, a light jacket, a compact umbrella or rain shell. Verdict: April is one of the best weather months in Bilbao.

May in Bilbao

May in Bilbao typically brings daytime highs around 63F (17C) and nighttime lows near 56F (13C). Expect some rain, averaging about 2.4 inches, and average winds near 8 mph. In real life, the month feels usable but changeable, with enough mild weather for outdoor plans and enough cool or wet spells to require backup layers.

Outdoor comfort is very comfortable for most travelers. Pack comfortable layers, a light jacket. Verdict: May is a good month for weather in Bilbao.

June in Bilbao

June in Bilbao typically brings daytime highs around 69F (21C) and nighttime lows near 61F (16C). Expect some rain, averaging about 2.2 inches, and average winds near 8 mph. In real life, this is one of the easier kinds of city weather, with comfortable walking conditions and only limited weather friction.

Outdoor comfort is very comfortable for most travelers. Pack comfortable layers, a light jacket. Verdict: June is a good month for weather in Bilbao.

July in Bilbao

July in Bilbao typically brings daytime highs around 73F (23C) and nighttime lows near 65F (18C). Expect some rain, averaging about 1.4 inches, and average winds near 8 mph. In real life, this is one of the easier kinds of city weather, with comfortable walking conditions and only limited weather friction.

Outdoor comfort is very comfortable for most travelers. Pack comfortable layers, a light jacket. Verdict: July is a good month for weather in Bilbao.

August in Bilbao

August in Bilbao typically brings daytime highs around 74F (24C) and nighttime lows near 66F (19C). Expect some rain, averaging about 1.4 inches, and average winds near 8 mph. In real life, this is one of the easier kinds of city weather, with comfortable walking conditions and only limited weather friction.

Outdoor comfort is very comfortable for most travelers. Pack comfortable layers, a light jacket. Verdict: August is a good month for weather in Bilbao.

September in Bilbao

September in Bilbao typically brings daytime highs around 72F (22C) and nighttime lows near 64F (18C). Expect some rain, averaging about 2.5 inches, and average winds near 8 mph. In real life, this is one of the easier kinds of city weather, with comfortable walking conditions and only limited weather friction.

Outdoor comfort is very comfortable for most travelers. Pack comfortable layers, a light jacket. Verdict: September is a good month for weather in Bilbao.

October in Bilbao

October in Bilbao typically brings daytime highs around 68F (20C) and nighttime lows near 59F (15C). Expect moderate rain, averaging about 3.5 inches, and average winds near 9 mph. In real life, the month feels usable but changeable, with enough mild weather for outdoor plans and enough cool or wet spells to require backup layers.

Outdoor comfort is very comfortable for most travelers. Pack comfortable layers, a light jacket, a compact umbrella or rain shell. Verdict: October is a good month for weather in Bilbao.

November in Bilbao

November in Bilbao typically brings daytime highs around 59F (15C) and nighttime lows near 53F (11C). Expect moderate rain, averaging about 5.9 inches, and average winds near 12 mph. In real life, the month feels usable but changeable, with enough mild weather for outdoor plans and enough cool or wet spells to require backup layers.

Outdoor comfort is very comfortable for most travelers. Pack comfortable layers, a light jacket, a compact umbrella or rain shell. Verdict: November is a good month for weather in Bilbao.

December in Bilbao

December in Bilbao typically brings daytime highs around 55F (13C) and nighttime lows near 49F (9C). Expect moderate rain, averaging about 4.7 inches, and average winds near 12 mph. In real life, the month feels usable but changeable, with enough mild weather for outdoor plans and enough cool or wet spells to require backup layers.

Outdoor comfort is very comfortable for most travelers. Pack a warm jacket, layers, a compact umbrella or rain shell. Verdict: December is a good month for weather in Bilbao.

Month-by-Month Weather Table for Bilbao

Hottest Time of Year in Bilbao

The hottest time of year in Bilbao is usually July and August. The hottest month in Bilbao is August, with average highs near 74F (24C) and nights around 66F (19C). If humidity or strong sun is present, the heat can feel more demanding than the average high suggests.

Early mornings and evenings are usually better than midafternoon during this period. If the hot months overlap with summer vacation or peak travel, the city may still be busy, but from a weather perspective this is not automatically the most comfortable time to visit.

Coldest Time of Year in Bilbao

The coldest time of year in Bilbao is usually January, February, March, and December. The coldest month in Bilbao is February, with average lows near 47F (8C) and daytime highs around 54F (12C). Snow is not the main issue, but cool mornings, wind, rain, or shorter daylight can still affect comfort.

Rainiest, Snowiest, or Most Humid Months in Bilbao

The rainiest month is usually November, with about 5.9 inches of rain. This is the month when showers, humidity, storms, or wet pavement are most likely to shape the trip. It can still be possible, but it is less reliable for outdoor-heavy plans.

Driest and Clearest Months in Bilbao

The driest month in Bilbao is usually August, with about 1.4 inches of precipitation. The broader dry-weather window often includes June, July, and August. These months are generally better for walking, photos, outdoor meals, and day trips because the odds of weather interruptions are lower.

Most Unpredictable Weather Period in Bilbao

The most unpredictable weather period in Bilbao is usually the wettest winter months. During this stretch, travelers should expect the forecast to matter more than the calendar. Pack flexible layers, check conditions before long walks, and avoid building a trip around only one kind of weather.

Best Weather for First-Time Visitors

For a first-time trip, the best weather window is usually April, May, and June. This period gives the strongest balance of mild temperatures, manageable rain, outdoor comfort, and enough daylight for a relaxed city schedule. It is also the period most likely to answer the question of when is the weather best in Bilbao without asking travelers to tolerate the year’s worst heat, cold, or wet weather.

When to Avoid Bilbao Because of Weather

Consider avoiding January if your trip depends on comfortable walking weather. These months are more likely to be too hot, too cold, too wet, too snowy, or simply less pleasant than the better parts of the year.

Families with kids, older travelers, photographers, and visitors who want to walk a lot should be especially careful with the worst weather months. Travelers who dislike heat should avoid the hottest stretch around July and August; travelers who dislike cold should avoid the coldest stretch around January, February, March, and December; travelers who dislike rain should be cautious around November.

Final Weather Verdict: When Should You Visit Bilbao?

The best month to visit Bilbao for weather is April. The worst month to visit Bilbao is January. The best season overall is usually Summer, while the best mild-weather period for a first-time visitor is April, May, and June.

If you want the best month to visit Bilbao, choose the month that gives you comfortable daytime temperatures and the lowest risk of weather disrupting outdoor plans. If you are comparing Bilbao weather by month, do not look only at the hottest month in Bilbao or the coldest month in Bilbao. Rain, snow, wind, humidity, and daylight can matter just as much.

For most travelers, the practical answer is simple: visit during the comfortable middle of the Bilbao seasons, avoid the most extreme month if you can, and pack for the specific weather pattern of your chosen dates.