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Reykjavik weather in September

Weather in Reykjavik: September

Average day temperature: 49.7°F
Average night temperature: 44.9°F
Sea water temperature: 50.3°F
Number of sunny days: 4 days
Day length: 11.4 - 14.5 hours
Number of rainy days: 9 days
Precipitation totals: 4.7 in.

Air temperature in September, °F

Show year:
2024
2023
2022

The highest day temperature during September of 2024 was 51°F. At the same time the lowest night temperature was 35°F. Day and night temperature averages during September were 45.8°F and 42.8°F.

Sea water temperature in Reykjavik in September, °F

Show year:
2024
2023
2022

The average sea water temperature in September of 2024 was 48.8°F. The highest and lowest sea temperatures during the month were 51.3°F and 47.1°F.

Sunny, partly cloudy and cloudy days

Mostly all days in September are cloudy but sunny and partly cloudy days are also possible.

Precipitation total in September, in.

Precipitation total value in Reykjavik in September is 3.9 in. Other months of the year show relatively similar values.

Wind speed in September, mph

The average wind speed value in September is 12.6 mph

Average sunny hours

This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 4.5.

Best time for vacation in Reykjavik

Sunniest months:
August 7 days
December 6 days
October 5 days
Warmest months:
July 55.7 °F
August 55.1 °F
June 52.3 °F
Warmest sea temp:
August 53.0 °F
July 52.4 °F
September 50.3 °F
Coldest months:
December 32.9 °F
January 33.5 °F
February 35.2 °F
Rainiest months:
September 9 days
January 9 days
April 8 days
Windiest months:
February 16.7 mph
January 16.1 mph
December 15.3 mph

Reykjavik on a weather map

Reykjavik
+19°F
W 6 mph
Feels like: +12°F
Precip.: 0%
Places in Iceland:
Name
°F
+5°F
+19°F
+19°F
+19°F
24 Hours Forecast
Reykjavik
Local time: 15:20
November 21, thursday
1800
19°F
SW
6 mph
2100
21°F
W
6 mph
November 22, friday
0000
23°F
W
7 mph
0300
25°F
W
8 mph
0600
25°F
W
9 mph
0900
25°F
SW
9 mph
1200
25°F
SW
9 mph
1500
25°F
SW
9 mph
Units of measurement: °C / °F