Climate averages 1991–2020
Bilbao weather
in April.
A mild, wet month: the 7th warmest and the joint 6th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
April is a mild month in Bilbao: daytime highs average 15.1°C and nights cool to about 9.5°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 97 mm of rain on roughly 15 days, which makes April a wet month (the joint 6th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 23 min on an average April day.
The nearest other city in this atlas is Barakaldo (6 km away). In April its highs average 15.3°C, about as warm as Bilbao, with 97 mm of rain.
Among the 93 cities listed in Spain, Bilbao ranks joint 85th of 93 for the warmest April highs and joint 83rd of 93 for the driest April (rainfall, lowest first). The mean April high of those 93 cities is 18.3°C; Bilbao is 3.2°C cooler than that mean.
From April to May, average highs rise by 2.6°C to 17.8°C, and monthly rainfall falls from 97 mm to 84 mm.
The annual picture
April in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Bilbao climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 11.9°C7.2°C | 7.2°C | 112 | 14.8 | 9.49 h |
| February | 12.1°C6.9°C | 6.9°C | 101 | 13.8 | 10.510 h |
| March | 14.0°C8.2°C | 8.2°C | 98 | 13.5 | 11.912 h |
| April, selected | 15.1°C9.5°C | 9.5°C | 97 | 15.2 | 13.413 h |
| May | 17.8°C12.1°C | 12.1°C | 84 | 14.2 | 14.715 h |
| June | 20.3°C14.9°C | 14.9°C | 69 | 11.4 | 15.315 h |
| July | 22.3°C16.9°C | 16.9°C | 60 | 10.4 | 15.015 h |
| August | 23.2°C17.6°C | 17.6°C | 55 | 10.3 | 14.014 h |
| September | 21.5°C15.9°C | 15.9°C | 65 | 11.8 | 12.513 h |
| October | 19.1°C13.7°C | 13.7°C | 97 | 13.9 | 11.111 h |
| November | 14.8°C10.2°C | 10.2°C | 135 | 15.6 | 9.810 h |
| December | 12.6°C8.1°C | 8.1°C | 105 | 14.4 | 9.09 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
April in nearby cities
- Barakaldo in AprilSpain · 6 kmHigh 15.3°C · Low 9.3°C · 97 mm rain
- Gasteiz / Vitoria in AprilSpain · 50 kmHigh 14.5°C · Low 5.2°C · 80 mm rain
- Santander in AprilSpain · 75 kmHigh 16.6°C · Low 8.8°C · 103 mm rain
- Donostia / San Sebastián in AprilSpain · 77 kmHigh 15.1°C · Low 9.2°C · 127 mm rain
- Logroño in AprilSpain · 97 kmHigh 15.7°C · Low 6.0°C · 63 mm rain
- Pamplona in AprilSpain · 115 kmHigh 14.9°C · Low 5.8°C · 80 mm rain
- Burgos in AprilSpain · 120 kmHigh 13.7°C · Low 4.0°C · 66 mm rain
- Palencia in AprilSpain · 191 kmHigh 15.7°C · Low 4.8°C · 50 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Bilbao) is explained once on the Bilbao year overview and on the Sources, method and limits page.
Barakaldo lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.