Weather in Bilbao in May 2025
Average weather
Average temperature in Bilbao in May
Going from a maximum of +27°C during the day to a minimum of +8°C during the night, the temperature in May averages around +20°C.
The average maximum temperature goes up 21% by the end of the month, compared with the beginning of the month, from +19°C to +23°C.
Is Bilbao warm or cold in May?
Bilbao is typically mild in May.
Maximum temperatures go up compared to the previous month from +15°C to +18°C. The minimum temperature also goes up from +10°C to +12°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how May is compared to other months in Bilbao:
Climate in Bilbao in May
| April | May | June | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +15°C | +18°C | +21°C | ||||
| Min. temperature | ||||||
| +2°C | +3°C | +8°C | ||||
| Max. temperature | ||||||
| +31°C | +35°C | +41°C | ||||
| Rainfall | ||||||
| 104 mm | 84 mm | 70 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 72% | 74% | 75% | ||||
| Air pressure | ||||||
| 1015 HPa | 1016 HPa | 1017 HPa | ||||
| Sunny days | ||||||
| 4 | 4 | 4 | ||||
| Cloudy days | ||||||
| 6 | 7 | 8 | ||||
| Rainy days | ||||||
| 19 | 18 | 15 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
May often has better weather than April. It’s getting warmer as May arrives. The average maximum temperature goes up from +15°C to +18°C during the day. As May arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 104 mm to 84 mm. Humidity rises from 72% to 74%. The average wind speed doesn’t change much during May, staying around 2 m/s. The amount of sunny days stay about the same, averaging 4 sunny days during the month.
Next month (June) brings a further decline in the weather.
Wind
The average wind speed is 3 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Bilbao is gradually decreasing during May, going from 5 m/s to 2 m/s over the course of the month.
Rain
How was the weather last May in Bilbao?
Climate Change over Years
The climate in Bilbao in May has not changed much over the last 43 years.
The average temperature was the lowest in 1980 (+16°C) and the highest in 2014 (+21°C). The driest year was 1989 with only 772 mm of rainfall, and the wettest year was 2013 with 2159 mm.
FAQ
Is May a good time to visit Bilbao?
Can you sunbathe in Bilbao in May?
Is Bilbao rainy in May?
Is it sunny in Bilbao in May?
Other cities in Spain
Monthly weather in Bilbao
Source of the data
For this page, we’ve looked at the typical weather in Bilbao, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.