Bilbao weather in September
Bilbao in September averages 19°C (67°F), 75 mm of rain and 5.5 hours of sun a day.
Of the twelve months in Bilbao, September is the third warmest, the fourth driest and the fifth sunniest.
- Average temp
- 19°C (67°F)
14–25°C · 57–76°F
- Rainfall
- 75 mm
Showers likely
- Sunshine
- 5.5 h
hours per day
What is Bilbao like in September?
Daytime
Days are mild.
Rain
Some rain is likely; pack for showers.
Evening
Evenings are cooler. A layer helps after sunset.
What should I pack for Bilbao in September?
A light rain jacket
About 75 mm falls this month — showers rather than washouts.
A layer for the evening
The day swings about 11°C between its low and its high.
September compared with August and October
September in Bilbao is 2°C cooler than August and 22 mm wetter than it, which averages 21°C (70°F).
September in Bilbao is 2.7°C warmer than October and 37 mm drier than it, which averages 17°C (62°F).
Daylight in Bilbao in September
On 15 September the sun is up for 12 hours 30 minutes in Bilbao, rising about 07:51 and setting about 20:21 local time.
September ends 1 hour 24 minutes shorter than it begins, so the last week of the month is a different length of day from the first.
That is 2 hours 53 minutes short of June, the longest-lit month here.
Where to stay in Bilbao
Dates are a starting point for September.
Travel guides for Bilbao
What to read before you book.
Bilbao weather by month
TemperatureRainfall
How September compares with the rest of the year
September is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 9°C / 49°F | 131 mm |
| February | 10°C / 49°F | 108 mm |
| March | 12°C / 53°F | 98 mm |
| April | 13°C / 56°F | 96 mm |
| May | 16°C / 61°F | 76 mm |
| June | 19°C / 65°F | 58 mm |
| July | 21°C / 69°F | 54 mm |
| August | 21°C / 70°F | 53 mm |
| September | 19°C / 67°F | 75 mm |
| October | 17°C / 62°F | 112 mm |
| November | 13°C / 55°F | 170 mm |
| December | 10°C / 50°F | 124 mm |
Check another month
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FAQs about Bilbao in September
September climate averages for Bilbao, 1991–2020.
Bilbao averages 19°C (67°F) in September, ranging from about 14°C (57°F) at night to 25°C (76°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 75 mm falls across September, enough to need a light jacket but not enough to reshape a trip.
Yes. September averages 19°C (67°F) against 17°C (62°F) in October — 2.7°C warmer.
September is 2°C cooler than August, and 22 mm wetter.
Yes. September falls inside the most comfortable stretch of the year here, May to October, on temperature and rainfall together.
About 5.5 hours of sun a day on the 1991–2020 average.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what September is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 12 hours 30 minutes of daylight in mid-September, against 15 hours 23 minutes in June and 9 hours in December.
On 15 September, sunrise is about 07:51 and sunset about 20:21 local time. Both shift across the month — the month ends 1 hour 24 minutes shorter than it starts.
