Annual mean 5°C · wettest around February · prevailing wind E
Warmest
13.4 °C
Coldest
-1.0 °C
Wettest
42%
Windiest
7.0 m/s
Prevailing
E
5.7 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Hafnarfjörður over the whole year is 5°C. July is the hottest month, with highs of about 13°C; January is the coldest, with lows of about 0°C. Hafnarfjörður has no sharply defined rainy season: the chance of rain on a given day runs from 20% in August, the driest month, to 38% in February, the wettest. Winds in Hafnarfjörður are highest in January, averaging 6.3 m/s (23 km/h), and lightest in July, at 4.0 m/s (14 km/h). The prevailing wind is from the E. The clearest skies in Hafnarfjörður come in December, when the sky is typically 74% covered; July is the cloudiest month, at 81%.
Month by month Hafnarfjörður climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
1°C
0°C
-6°C
36%
76%
6.3 m/s
0
0
0
February
2°C
1°C
-5°C
38%
77%
6.2 m/s
0
0
0
March
3°C
1°C
-3°C
34%
78%
5.6 m/s
0
0
1
April
6°C
3°C
0°C
27%
76%
5.5 m/s
0
0
8
May
9°C
6°C
3°C
29%
77%
5.2 m/s
1
0
22
June
11°C
8°C
6°C
24%
80%
4.6 m/s
1
0
45
July
13°C
10°C
9°C
24%
81%
4.0 m/s
6
0
69
August
13°C
10°C
9°C
20%
77%
4.4 m/s
3
0
66
September
10°C
7°C
5°C
32%
75%
4.9 m/s
0
0
35
October
7°C
4°C
1°C
31%
79%
5.1 m/s
0
0
11
November
4°C
3°C
-2°C
33%
76%
5.5 m/s
0
0
2
December
1°C
0°C
-5°C
36%
74%
5.4 m/s
0
0
1
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Hafnarfjörður weather by season
Year round, Hafnarfjörður has days of about 1°C at their warmest in January, its coolest month, and 13°C in July, its warmest; the coolest hours of the day run from 0°C to 10°C through the year, and the average temperature over the year is 5°C around the clock. Rain is most likely around February and least likely around August. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Hafnarfjörður weather in winterDecember to February
High 1°CLow 0°CRain 37%
Winter in Hafnarfjörður has typical daily highs of about 1°C and lows of about 0°C, with a 37% chance of rain on a given day.
Hafnarfjörður weather in springMarch to May
High 6°CLow 3°CRain 30%
Spring in Hafnarfjörður has typical daily highs of about 6°C and lows of about 3°C, with a 30% chance of rain on a given day.
Hafnarfjörður weather in summerJune to August
High 12°CLow 9°CRain 23%
Summer in Hafnarfjörður has typical daily highs of about 12°C and lows of about 9°C, with a 23% chance of rain on a given day.
Hafnarfjörður weather in autumnSeptember to November
High 7°CLow 5°CRain 32%
Autumn in Hafnarfjörður has typical daily highs of about 7°C and lows of about 5°C, with a 32% chance of rain on a given day.
When is the rainy season in Hafnarfjörður?
Hafnarfjörður has no sharply defined rainy season: the chance of rain on a given day runs from 20% in August, the driest month, to 38% in February, the wettest.
What time of year is Hafnarfjörður windiest?
Winds in Hafnarfjörður are highest in January, averaging 6.3 m/s (23 km/h), and lightest in July, at 4.0 m/s (14 km/h). The prevailing wind is from the E.
What is the average temperature in Hafnarfjörður year round?
The average temperature in Hafnarfjörður over the whole year is 5°C. July is the hottest month, with highs of about 13°C; January is the coldest, with lows of about 0°C.