Moss climate — normals and trends
Moss (Norway) has a warm-summer humid continental climate (Dfb) under the Köppen-Geiger classification. Its mean annual temperature is 6.6 °C and it receives 812 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 (17.6 °C on average) and the coldest is January (-4.0 °C). Rainfall peaks in August.
Moss averages 119 frost days, 1 hot days (≥ 30 °C) and 124 rainy days per year.
Moss has warmed by +2.8 °C between 1940 and 2025, or +0.33 °C per decade. This trend is statistically significant.
The number of frost days there went from about 142 to 96 per year over the period.
The hottest day of the period reached 34.0 °C (on 27 July 2018) and the coldest -29.8 °C (on 10 February 1985).
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
MossØstfold
- coords
- 59.43°, 10.66°
- period
- 1940–2025 · 86 yrs
Mean daily temperature
6.6°C
Average daily high
10.0°C
Average daily low
3.2°C
Annual rainfall
812mm
Sunshine / day
7.9h
Mean relative humidity
77%
Average peak wind
15.7km/h
Seasonal range
21.6°C
Frost days (< 0 °C)
119 d/yr
Hot days (≥ 30 °C)
1 d/yr
Rainy days (≥ 1 mm)
124 d/yr
Annual snowfall
119.7 cm
Average feels-like high
7.2 °C
Average feels-like low
0.1 °C
Average peak gust
33.6 km/h
Tropical nights (≥ 20 °C)
0 d/yr
Solar radiation
9.7 MJ/m²
Has the climate changed?
One stripe per year, 1940 to 2025
+2.8 °C
since 1940
+0.3 °C per decade · r² = 0.39 · 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
34.0 °C
27 July 2018
Coldest day
-29.8 °C
10 February 1985
Wettest day
53 mm
31 July 1989
Windiest day
45.4 km/h
5 January 1976
Strongest gust
102.2 km/h
5 January 1976
Hottest feels-like
33.8 °C
26 July 2019
Coldest feels-like
-34.9 °C
10 February 1985
Snowiest day
26.3 cm
6 November 1971
Sunniest day
17.8 h
19 June 2022
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 | 1.1 °C | +2.7 °C | 108 mm | +46 mm |
| Feb | 2.6 °C | +3.1 °C | 34 mm | -14 mm |
| Mar | 8.8 °C | +4.6 °C | 18 mm | -30 mm |
| Apr | 14.2 °C | +4.5 °C | 44 mm | -5 mm |
| May | 17.4 °C | +1.6 °C | 29 mm | -31 mm |
| Jun | 19.9 °C | +0.2 °C | 63 mm | -8 mm |
| Jul | 25.1 °C | +3.5 °C | 91 mm | +12 mm |
| Aug | 21.0 °C | +0.7 °C | 87 mm | +2 mm |
| Sep | 17.4 °C | +1.5 °C | 143 mm | +64 mm |
| Oct | 11.2 °C | +1.0 °C | 141 mm | +57 mm |
| Nov | 6.4 °C | +2.1 °C | 86 mm | +4 mm |
| Dec | 4.6 °C | +4.2 °C | 94 mm | +27 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 Moss?
Moss has a warm-summer humid continental climate (Köppen Dfb). Over 1940-2025, the average annual temperature is 6.6 °C and it receives 812 mm of precipitation per year.
What is the hottest day ever recorded in Moss?
The hottest day measured in Moss between 1940 and 2025 was 27 July 2018, reaching 34.0 °C.
What is the coldest day in Moss?
The coldest day measured in Moss between 1940 and 2025 was 10 February 1985, at -29.8 °C.
Does it snow in Moss?
Yes. Moss gets on average 119.7 cm of snow per year and has around 119 frost days.
Has the climate of Moss warmed?
Yes: Moss warmed by +2.8 °C between 1940 and 2025, a statistically significant trend.
What is the wettest day in Moss?
The wettest day measured in Moss between 1940 and 2025 was 31 July 1989, with 53 mm of rain in 24 hours.
What was the windiest day in Moss?
The windiest day measured in Moss between 1940 and 2025 was 5 January 1976, with winds reaching 45.4 km/h.
What is the warmest month in Moss?
The warmest month in Moss is July (17.6 °C on average); the coldest is January (-4.0 °C).
How much does it rain in Moss?
Moss receives on average 812 mm of precipitation per year, spread over about 124 rainy days.
Is it sunny in Moss?
Moss gets on average 7.9 hours of sunshine per day, roughly 2,884 hours per year over 1940-2025.
What is the biggest single-day snowfall in Moss?
The heaviest 24-hour snowfall measured in Moss between 1940 and 2025 was 6 November 1971, with 26.3 cm.
Are there tropical nights in Moss?
Almost never: tropical nights (temperature staying above 20 °C) are virtually non-existent in Moss.
What was the most extreme apparent temperature in Moss?
In Moss, between 1940 and 2025, the highest apparent temperature reached 33.8 °C on 26 July 2019, and the lowest was -34.9 °C on 10 February 1985.
Compare Moss with another city
Pick a second city: its normals will be set against these, indicator by indicator.
Nearby cities
The climate around Moss