This information may change. Always check the official source.Last verified: August 2026 by Ondřej Kadlec
Best time to visit Norway
In Oslo: June to August — the months averaging 18–27 °C by day. No other month of the twelve falls inside that band in Oslo.
Norway is not one climate. Each reference city below is answered on its own numbers.
Oslo
Jan-2°January: -2 °C by day, -7 °C at night, 73 mm of rain
Feb0°February: 0 °C by day, -6 °C at night, 56 mm of rain
Mar4°March: 4 °C by day, -3 °C at night, 52 mm of rain
Apr10°April: 10 °C by day, 1 °C at night, 57 mm of rain
May15°May: 15 °C by day, 6 °C at night, 82 mm of rain
Jun20°June: 20 °C by day, 11 °C at night, 98 mm of rain, recommended
Jul21°July: 21 °C by day, 14 °C at night, 110 mm of rain, recommended
Aug20°August: 20 °C by day, 13 °C at night, 104 mm of rain, recommended
Sep16°September: 16 °C by day, 9 °C at night, 88 mm of rain
Oct9°October: 9 °C by day, 5 °C at night, 94 mm of rain
Nov4°November: 4 °C by day, 0 °C at night, 84 mm of rain
Dec-1°December: -1 °C by day, -5 °C at night, 65 mm of rain
Warmest
July, 21 °C
Coolest
January, -2 °C
Driest
March, 52 mm
Wettest
July, 110 mm
Bergen
June to August. No month in Bergen reaches 18 °C by day, so those are simply the warmest three, at 15–17 °C.
Jan2°January: 2 °C by day, -2 °C at night, 240 mm of rain
Feb3°February: 3 °C by day, -2 °C at night, 224 mm of rain
Mar5°March: 5 °C by day, -1 °C at night, 180 mm of rain
Apr9°April: 9 °C by day, 2 °C at night, 125 mm of rain
May13°May: 13 °C by day, 6 °C at night, 120 mm of rain
Jun15°June: 15 °C by day, 9 °C at night, 122 mm of rain, recommended
Jul17°July: 17 °C by day, 11 °C at night, 160 mm of rain, recommended
Aug17°August: 17 °C by day, 11 °C at night, 199 mm of rain, recommended
Sep15°September: 15 °C by day, 9 °C at night, 247 mm of rain
Oct10°October: 10 °C by day, 5 °C at night, 292 mm of rain
Nov6°November: 6 °C by day, 2 °C at night, 250 mm of rain
Dec3°December: 3 °C by day, -1 °C at night, 258 mm of rain
Warmest
July, 17 °C
Coolest
January, 2 °C
Driest
May, 120 mm
Wettest
October, 292 mm
Tromso
June to August. No month in Tromso reaches 18 °C by day, so those are simply the warmest three, at 12–16 °C.
Jan-6°January: -6 °C by day, -10 °C at night, 109 mm of rain
Feb-5°February: -5 °C by day, -10 °C at night, 98 mm of rain
Mar-2°March: -2 °C by day, -7 °C at night, 108 mm of rain
Apr2°April: 2 °C by day, -3 °C at night, 91 mm of rain
May7°May: 7 °C by day, 2 °C at night, 93 mm of rain
Jun12°June: 12 °C by day, 7 °C at night, 95 mm of rain, recommended
Jul16°July: 16 °C by day, 10 °C at night, 96 mm of rain, recommended
Aug15°August: 15 °C by day, 10 °C at night, 109 mm of rain, recommended
Sep11°September: 11 °C by day, 6 °C at night, 126 mm of rain
Oct4°October: 4 °C by day, 0 °C at night, 125 mm of rain
Nov-1°November: -1 °C by day, -6 °C at night, 99 mm of rain
Dec-4°December: -4 °C by day, -9 °C at night, 101 mm of rain
Warmest
July, 16 °C
Coolest
January, -6 °C
Driest
April, 91 mm
Wettest
September, 126 mm
How this is worked out: a month qualifies when its mean daytime high falls between 18 °C and 27 °C. Where more than five qualify, the answer is the driest run of consecutive qualifying months; where none do, it is the driest three months in a row if the year is hot throughout, or the warmest three if it never gets there. The figures are the thirty-year monthly averages charted below, and they are averages, not a forecast — any single year can miss them by a wide margin.
Oslo
Long-term averages for Oslo: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).
DayNight
Show the monthly table
Oslo
Month
Day (°C)
Night (°C)
Rain (mm)
January
-2
-7
73
February
0
-6
56
March
4
-3
52
April
10
1
57
May
15
6
82
June
20
11
98
July
21
14
110
August
20
13
104
September
16
9
88
October
9
5
94
November
4
0
84
December
-1
-5
65
Bergen
Long-term averages for Bergen: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).
DayNight
Show the monthly table
Bergen
Month
Day (°C)
Night (°C)
Rain (mm)
January
2
-2
240
February
3
-2
224
March
5
-1
180
April
9
2
125
May
13
6
120
June
15
9
122
July
17
11
160
August
17
11
199
September
15
9
247
October
10
5
292
November
6
2
250
December
3
-1
258
Tromso
Long-term averages for Tromso: the mean daily high, the mean overnight low and the mean monthly rainfall across 30 years of ERA5 reanalysis data (1995–2024).
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