Hammerfest climate — normals and trends
Hammerfest (Norway) has a subarctic climate (Dfc) under the Köppen-Geiger classification. Its mean annual temperature is 1.6 °C and it receives 996 mm of precipitation per year.
These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.
The warmest month is July (10.8 °C on average) and the coldest is January (-5.6 °C). Rainfall peaks in October.
Hammerfest averages 177 frost days, 0 hot days (≥ 30 °C) and 191 rainy days per year.
Hammerfest has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.
The number of frost days there went from about 197 to 157 per year over the period.
The hottest day of the period reached 26.1 °C (on 1 August 2018) and the coldest -25.0 °C (on 28 January 1999).
Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.
Climate normals · ERA5
HammerfestFinnmark
- coords
- 70.66°, 23.68°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
1.6°C
Average daily high
3.4°C
Average daily low
-0.2°C
Annual rainfall
996mm
Sunshine / day
6.6h
Mean relative humidity
80%
Average peak wind
26.9km/h
Seasonal range
16.4°C
Frost days (< 0 °C)
177 d/yr
Hot days (≥ 30 °C)
0 d/yr
Rainy days (≥ 1 mm)
191 d/yr
Annual snowfall
313.9 cm
Average feels-like high
-1.2 °C
Average feels-like low
-5.5 °C
Average peak gust
45.3 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
7.2 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.3 °C
since 1940
+0.3 °C per decade · r² = 0.44 · p = < 0.001
Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).
A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.
Records for the period
Hottest day
26.1 °C
1 August 2018
Coldest day
-25.0 °C
28 January 1999
Wettest day
41 mm
24 June 1967
Windiest day
86.1 km/h
2 January 1993
Strongest gust
162.4 km/h
1 February 1993
Hottest feels-like
27.2 °C
1 August 2018
Coldest feels-like
-32.4 °C
1 February 1966
Snowiest day
24.4 cm
18 March 2024
Sunniest day
23.6 h
5 June 2024
Normals computed over complete calendar years 1940–2025.
A specific year
Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?
Across the whole year
Month by month
| High | vs. normal | Precipitation | vs. normal | |
|---|---|---|---|---|
| Jan | -1.5 °C | +2.0 °C | 112 mm | +22 mm |
| Feb | 1.3 °C | +5.0 °C | 105 mm | +27 mm |
| Mar | -0.2 °C | +1.7 °C | 109 mm | +24 mm |
| Apr | 0.5 °C | -0.6 °C | 157 mm | +85 mm |
| May | 5.9 °C | +1.4 °C | 43 mm | -24 mm |
| Jun | 9.6 °C | +0.6 °C | 56 mm | -15 mm |
| Jul | 13.0 °C | +0.4 °C | 45 mm | -23 mm |
| Aug | 14.0 °C | +2.0 °C | 116 mm | +39 mm |
| Sep | 12.8 °C | +4.1 °C | 94 mm | +2 mm |
| Oct | 6.3 °C | +2.6 °C | 140 mm | +27 mm |
| Nov | 1.4 °C | +1.4 °C | 148 mm | +56 mm |
| Dec | 0.5 °C | +2.7 °C | 131 mm | +39 mm |
The year's extremes
What was the weather like that day?
Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.
Frequently asked questions
What is the climate of Hammerfest?
Hammerfest has a subarctic climate (Köppen Dfc). Over 1940-2025, the average annual temperature is 1.6 °C and it receives 996 mm of precipitation per year.
What is the hottest day ever recorded in Hammerfest?
The hottest day measured in Hammerfest between 1940 and 2025 was 1 August 2018, reaching 26.1 °C.
What is the coldest day in Hammerfest?
The coldest day measured in Hammerfest between 1940 and 2025 was 28 January 1999, at -25.0 °C.
Does it snow in Hammerfest?
Yes. Hammerfest gets on average 313.9 cm of snow per year and has around 177 frost days.
Has the climate of Hammerfest warmed?
Yes: Hammerfest warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Hammerfest?
The wettest day measured in Hammerfest between 1940 and 2025 was 24 June 1967, with 41 mm of rain in 24 hours.
What was the windiest day in Hammerfest?
The windiest day measured in Hammerfest between 1940 and 2025 was 2 January 1993, with winds reaching 86.1 km/h.
What is the warmest month in Hammerfest?
The warmest month in Hammerfest is July (10.8 °C on average); the coldest is January (-5.6 °C).
How much does it rain in Hammerfest?
Hammerfest receives on average 996 mm of precipitation per year, spread over about 191 rainy days.
Is it sunny in Hammerfest?
Hammerfest gets on average 6.6 hours of sunshine per day, roughly 2,409 hours per year over 1940-2025.
What is the biggest single-day snowfall in Hammerfest?
The heaviest 24-hour snowfall measured in Hammerfest between 1940 and 2025 was 18 March 2024, with 24.4 cm.
Are there tropical nights in Hammerfest?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Hammerfest.
What was the most extreme apparent temperature in Hammerfest?
In Hammerfest, between 1940 and 2025, the highest apparent temperature reached 27.2 °C on 1 August 2018, and the lowest was -32.4 °C on 1 February 1966.
Compare Hammerfest with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Hammerfest