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Tonsberg weather by month
Check out Tonsberg weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in Tonsberg (°C)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max temperature (daytime) | 0 |
0 |
4 |
9 |
15 |
20 |
21 |
20 |
15 |
11 |
5 |
2 |
| Min temperature (night-time) | -5 |
-6 |
-4 |
0 |
6 |
10 |
12 |
11 |
8 |
4 |
0 |
-4 |
| Heat & Humidity | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Sea temperature | -1 |
-1 |
-1 |
3 |
10 |
14 |
17 |
18 |
15 |
11 |
9 |
0 |
Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme
Sunshine & UV index in Tonsberg
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daily hours of sunshine | ||||||||||||
| Daily hours of daylight | 7 |
9 |
12 |
15 |
17 |
18 |
18 |
15 |
13 |
10 |
8 |
6 |
| UV Index (Maximum) | 0 |
1 |
1 |
3 |
4 |
5 |
5 |
4 |
3 |
1 |
0 |
0 |
Rainfall in Tonsberg
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of days with some rain | 16 |
13 |
14 |
12 |
13 |
14 |
14 |
15 |
15 |
17 |
17 |
15 |
| Average monthly rainfall (mm) | 54 |
40 |
52 |
42 |
58 |
60 |
69 |
86 |
90 |
101 |
83 |
58 |
More about Tonsberg
Tonsberg by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Norway
The climate guide for Norway (Tonsberg) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
What's the climate like in Tonsberg?
Tonsberg has a cold climate with warm summers and some rainfall in all months.
Tonsberg weather in January
Expect daytime maximum temperatures of 0°C in Tonsberg, Norway in January based on long-term weather averages. There is 1 hour of sunshine per day on average with 16 days with some rainfall and typically 54 mm of rainfall in the month, which might fall as snow.
- 0°C max day temperature
0 - 1 hour of sunshine per day
- 16 days with some rainfall
16 - -5°C min night temperature
-5 - 7 hours of daylight per day
7 - No heat & humidity
0 - 54 mm of monthly rainfall
54 - No UV (Maximum) Index UV index
0 - -1°C sea temperature
-1
Tonsberg weather in February
Expect daytime maximum temperatures of 0°C in Tonsberg, Norway in February based on long-term weather averages. There are 2 hours of sunshine per day on average with 13 days with some rainfall and typically 40 mm of rainfall in the month, which might fall as snow.
- 0°C max day temperature
0 - 2 hours of sunshine per day
- 13 days with some rainfall
13 - -6°C min night temperature
-6 - 9 hours of daylight per day
9 - No heat & humidity
0 - 40 mm of monthly rainfall
40 - 1 (Low) UV index
1 - -1°C sea temperature
-1
Tonsberg weather in March
Expect daytime maximum temperatures of 4°C in Tonsberg, Norway in March based on long-term weather averages. There are 3 hours of sunshine per day on average with 14 days with some rainfall and typically 52 mm of rainfall in the month, which might fall as snow.
- 4°C max day temperature
4 - 3 hours of sunshine per day
- 14 days with some rainfall
14 - -4°C min night temperature
-4 - 12 hours of daylight per day
12 - No heat & humidity
0 - 52 mm of monthly rainfall
52 - 1 (Low) UV index
1 - -1°C sea temperature
-1
Tonsberg weather in April
Expect daytime maximum temperatures of 9°C in Tonsberg, Norway in April based on long-term weather averages. There are 5 hours of sunshine per day on average with 12 days with some rainfall and typically 42 mm of rainfall in the month.
- 9°C max day temperature
9 - 5 hours of sunshine per day
- 12 days with some rainfall
12 - 0°C min night temperature
0 - 15 hours of daylight per day
15 - No heat & humidity
0 - 42 mm of monthly rainfall
42 - 3 (Moderate) UV index
3 - 3°C sea temperature
3
Tonsberg weather in May
Expect daytime maximum temperatures of 15°C in Tonsberg, Norway in May based on long-term weather averages. There are 7 hours of sunshine per day on average with 13 days with some rainfall and typically 58 mm of rainfall in the month.
- 15°C max day temperature
15 - 7 hours of sunshine per day
- 13 days with some rainfall
13 - 6°C min night temperature
6 - 17 hours of daylight per day
17 - No heat & humidity
0 - 58 mm of monthly rainfall
58 - 4 (Moderate) UV index
4 - 10°C sea temperature
10
Tonsberg weather in June
Expect daytime maximum temperatures of 20°C in Tonsberg, Norway in June based on long-term weather averages. There are 9 hours of sunshine per day on average with 14 days with some rainfall and typically 60 mm of rainfall in the month.
- 20°C max day temperature
20 - 9 hours of sunshine per day
- 14 days with some rainfall
14 - 10°C min night temperature
10 - 18 hours of daylight per day
18 - No heat & humidity
0 - 60 mm of monthly rainfall
60 - 5 (Moderate) UV index
5 - 14°C sea temperature
14
Tonsberg weather in July
Expect daytime maximum temperatures of 21°C in Tonsberg, Norway in July based on long-term weather averages. There are 8 hours of sunshine per day on average with 14 days with some rainfall and typically 69 mm of rainfall in the month.
- 21°C max day temperature
21 - 8 hours of sunshine per day
- 14 days with some rainfall
14 - 12°C min night temperature
12 - 18 hours of daylight per day
18 - No heat & humidity
0 - 69 mm of monthly rainfall
69 - 5 (Moderate) UV index
5 - 17°C sea temperature
17
Tonsberg weather in August
Expect daytime maximum temperatures of 20°C in Tonsberg, Norway in August based on long-term weather averages. There are 7 hours of sunshine per day on average with 15 days with some rainfall and typically 86 mm of rainfall in the month.
- 20°C max day temperature
20 - 7 hours of sunshine per day
- 15 days with some rainfall
15 - 11°C min night temperature
11 - 15 hours of daylight per day
15 - No heat & humidity
0 - 86 mm of monthly rainfall
86 - 4 (Moderate) UV index
4 - 18°C sea temperature
18
Tonsberg weather in September
Expect daytime maximum temperatures of 15°C in Tonsberg, Norway in September based on long-term weather averages. There are 5 hours of sunshine per day on average with 15 days with some rainfall and typically 90 mm of rainfall in the month.
- 15°C max day temperature
15 - 5 hours of sunshine per day
- 15 days with some rainfall
15 - 8°C min night temperature
8 - 13 hours of daylight per day
13 - No heat & humidity
0 - 90 mm of monthly rainfall
90 - 3 (Moderate) UV index
3 - 15°C sea temperature
15
Tonsberg weather in October
Expect daytime maximum temperatures of 11°C in Tonsberg, Norway in October based on long-term weather averages. There are 3 hours of sunshine per day on average with 17 days with some rainfall and typically 101 mm of rainfall in the month.
- 11°C max day temperature
11 - 3 hours of sunshine per day
- 17 days with some rainfall
17 - 4°C min night temperature
4 - 10 hours of daylight per day
10 - No heat & humidity
0 - 101 mm of monthly rainfall
101 - 1 (Low) UV index
1 - 11°C sea temperature
11
Tonsberg weather in November
Expect daytime maximum temperatures of 5°C in Tonsberg, Norway in November based on long-term weather averages. There are 2 hours of sunshine per day on average with 17 days with some rainfall and typically 83 mm of rainfall in the month.
- 5°C max day temperature
5 - 2 hours of sunshine per day
- 17 days with some rainfall
17 - 0°C min night temperature
0 - 8 hours of daylight per day
8 - No heat & humidity
0 - 83 mm of monthly rainfall
83 - No UV (Maximum) Index UV index
0 - 9°C sea temperature
9
Tonsberg weather in December
Expect daytime maximum temperatures of 2°C in Tonsberg, Norway in December based on long-term weather averages. There is 1 hour of sunshine per day on average with 15 days with some rainfall and typically 58 mm of rainfall in the month, which might fall as snow.
- 2°C max day temperature
2 - 1 hour of sunshine per day
- 15 days with some rainfall
15 - -4°C min night temperature
-4 - 6 hours of daylight per day
6 - No heat & humidity
0 - 58 mm of monthly rainfall
58 - No UV (Maximum) Index UV index
0 - 0°C sea temperature
0
More about Tonsberg
Tonsberg by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Norway
- Explore latest offers on Fred Olsen Cruises in 2026/2027
- Find last minute deals or early bird discounts
- Filter offers by price, destination, ship & departure point
The climate guide for Norway (Tonsberg) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Compare Tonsberg weather with the UK
The weather chart below compares the average monthly maximum daytime temperature for Tonsberg, Norway and the UK (London).
Maximum daytime temperature (°C)
Metric (°C / mm) | Imperial (°F / inches)
More about Norway
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