20.09
sun
sun
Day
70°F
S 2 mph
Precip.
2%
2%
Night
63°F
N 2 mph
Precip.
11%
11%
21.09
mon
mon
Day
72°F
SW 3 mph
Precip.
5%
5%
Night
64°F
NE 4 mph
Precip.
9%
9%
22.09
tue
tue
Day
72°F
S 4 mph
Precip.
1%
1%
Night
63°F
NE 3 mph
Precip.
3%
3%
23.09
wed
wed
Day
73°F
S 1 mph
Precip.
1%
1%
Night
64°F
N 3 mph
Precip.
6%
6%
24.09
thu
thu
Day
79°F
NW 3 mph
Precip.
0%
0%
Night
70°F
NE 3 mph
Precip.
2%
2%
25.09
fri
fri
Day
73°F
S 3 mph
Precip.
1%
1%
Night
63°F
N 1 mph
Precip.
14%
14%
26.09
sat
sat
Day
66°F
SE 2 mph
Precip.
9%
9%
Night
70°F
N 2 mph
Precip.
9%
9%
27.09
sun
sun
Day
73°F
N 7 mph
Precip.
9%
9%
Night
73°F
N 6 mph
Precip.
4%
4%
28.09
mon
mon
Day
75°F
N 7 mph
Precip.
1%
1%
Night
72°F
N 8 mph
Precip.
5%
5%
29.09
tue
tue
Day
66°F
NW 6 mph
Precip.
53%
53%
Night
64°F
N 4 mph
Precip.
31%
31%
30.09
wed
wed
Day
72°F
NW 2 mph
Precip.
3%
3%
Night
64°F
N 2 mph
Precip.
31%
31%
01.10
thu
thu
Day
68°F
SW 2 mph
Precip.
16%
16%
Night
63°F
SE 2 mph
Precip.
40%
40%
02.10
fri
fri
Day
61°F
NE 4 mph
Precip.
65%
65%
Night
61°F
NW 2 mph
Precip.
34%
34%
03.10
sat
sat
Day
70°F
N 5 mph
Precip.
15%
15%
Night
64°F
E 3 mph
Precip.
22%
22%
Sea water temperature in September, °F
Show year:
2026
2025
2024
The average sea water temperature in September of 2026 was 69.8°F. The highest and lowest sea temperatures during the month were 71.1°F and 68.4°F.
Sea water temperature in October, °F
Show year:
2025
2024
2023
The average sea water temperature in October of 2025 was 65.3°F. The highest and lowest sea temperatures during the month were 67.6°F and 63.5°F.
Air temperature in Bilbao, °F
Precipitation total in Bilbao, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Bilbao
Bilbao on a weather map
Places in Spain:
Name
°F
24 Hours Forecast
Bilbao
Local time: 04:09
September 20, sunday
0600
59°F
N
3 mph
3 mph
0900
59°F
N
2 mph
2 mph
1200
70°F
S
2 mph
2 mph
1500
72°F
S
6 mph
6 mph
1800
70°F
S
6 mph
6 mph
2100
63°F
SE
2 mph
2 mph
September 21, monday
0000
63°F
N
2 mph
2 mph
0300
61°F
NE
3 mph
3 mph
