Measurements:
°C
°F
Reykjavik
50°F
N 13 mph
Feels like: 44°F
Precip: 14%
World Resorts Iceland Reykjavik Weather

7 Day Weather Forecast

09.08
tue
DAY
48°F
NE 4 mph
precip
3%
NIGHT
50°F
N 14 mph
precip
27%
09.09
wed
DAY
50°F
N 12 mph
precip
32%
NIGHT
52°F
NW 29 mph
precip
52%
09.10
thu
DAY
54°F
NW 17 mph
precip
40%
NIGHT
48°F
NE 22 mph
precip
69%
09.11
fri
DAY
48°F
NE 19 mph
precip
29%
NIGHT
46°F
NE 9 mph
precip
30%
09.12
sat
DAY
48°F
N 4 mph
precip
30%
NIGHT
42°F
SW 9 mph
precip
9%
09.13
sun
DAY
46°F
W 15 mph
precip
33%
NIGHT
50°F
SW 12 mph
precip
71%
09.14
mon
DAY
48°F
S 8 mph
precip
61%
NIGHT
46°F
S 22 mph
precip
47%

Reykjavik Sea Water Temperature in September, °F

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Reykjavik was 12.1°F. The maximum and minimum values were 10.4°F and 13.7°F respectively.

Reykjavik on the Weather Map

Best Time to Visit Reykjavik
The most sunny months:
August 7 days
December 6 days
May 6 days
The most warm months:
July 56.0 °F
August 55.3 °F
June 52.2 °F
Warmest sea temperature:
August 53.4 °F
July 52.8 °F
September 50.6 °F
The most cold months:
December 31.3 °F
January 31.5 °F
February 33.4 °F
The most rainy months:
September 9 days
January 8 days
April 7 days
The most windy months:
February 16 mph
January 16 mph
December 15 mph