Bilbao Weather in May
May in Bilbao brings pleasant temperatures, with daytime highs of 19°C (66°F) and nights around 12°C (54°F). Quite a bit of rainfall is expected, around 92 mm (3.6 in), so pack an umbrella.
Rainfall in Bilbao in May
This month experiences about 16 days of rain according to historical data, averaging 92 mm (3.6 in). Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.
Temperature in Bilbao in May
May in Bilbao brings pleasant temperatures, with highs of 19°C (66°F) and nights around 12°C (54°F). A light jacket or extra layer can be useful, especially outside the warmest hours of the day. At 12°C (54°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Bilbao in May
The month experiences a moderate amount of sunlight, with 168 hours of sunshine. This provides a nice balance between sunshine and clouds.Should you favor a climate that's both dry and comfortably warm, June, July, August and September typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Spain, check out our Bilbao's climate page.
Bilbao Temperature in May
Min Temperature
12°C (54°F)
Max Temperature
19°C (66°F)
Chance of Rain
53%
Precipitation
92 mm (3.6 in)
Rainy days
16 days
Humidity
69%
Sunshine
168 hours
Percentage Sunshine
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Bilbao typically rise from around 19°C (66°F) at the start of May to approximately 22°C (72°F) by the end. Nights are cool, with lows typically ranging from 8°C (46°F) to 12°C (54°F).
Average temperatures in May
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in May
Historical weather for Bilbao in May
Browse day-by-day weather records for Bilbao spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Bilbao historical weather extremes in May
The extremes listed below come from historical weather data collected in Bilbao from 1976 through 2026.
- The hottest May day on record in Bilbao reached 37°C (99°F) (May 22, 2026).
- Bilbao experienced its chilliest May day on May 6, 1985, reaching only 9°C (48°F).
- The coldest night in May in Bilbao was on May 13, 1996, with a minimum of -2°C (28°F).
Best Places in Spain in May
Find out more about the weather in Spain and which places have the best travel conditions in this month. See all of Spain in May →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Bilbao in May
Pleasant temperatures in May mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Bilbao in May
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Spain, check out our Bilbao's climate page.
Temperature Rainfall Sunshine Humidity
See the full Bilbao climate overview or explore weather in Spain.
