Norway · 1991–2020

Best time to visit
Tromsø.

July leads for comfortable weather in Tromsø: typically 16.3°C by day, 9.1°C at night, with 74 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high16.3°C

Typical low9.1°C

Rain in July74 mm

Comfort

July

July · August · June

51climate match

Beach

July

July · January · February

13climate match

Outdoors

July

July · August · June

70climate match

The weakest month is January, scoring 5 against July’s 51 — days reach only -1°C, 25° below the 24°C the score treats as ideal.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

5-1° / -5.3°

Feb

5-1.1° / -5.7°

Mar

50.6° / -4.4°

Apr

54.1° / -1.6°

May

178.8° / 2.4°

Jun

3813° / 6.2°

Jul

5116.3° / 9.1°

Aug

4215° / 8.3°

Sep

1810.9° / 5.3°

Oct

55.2° / 0.9°

Nov

52.1° / -1.9°

Dec

50.3° / -3.9°

Monthly climate evidence for Tromsø — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 28 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	-1°C	-5.3°C	109 mm	15.1	5.4°C	none	5	Strong coverage
February	-1.1°C	-5.7°C	94 mm	12.6	4.5°C	7 h 06	5	Strong coverage
March	0.6°C	-4.4°C	98 mm	14.4	4.1°C	11 h 16	5	Strong coverage
April	4.1°C	-1.6°C	70 mm	12.5	4.3°C	15 h 52	5	Strong coverage
May	8.8°C	2.4°C	56 mm	11.3	5.8°C	21 h 47	17	Strong coverage
June	13°C	6.2°C	57 mm	10.7	7.8°C	24 h	38	Strong coverage
July	16.3°C	9.1°C	74 mm	11.4	10.1°C	24 h	51	Strong coverage
August	15°C	8.3°C	89 mm	12.9	11.0°C	18 h 01	42	Strong coverage
September	10.9°C	5.3°C	111 mm	15.2	10.0°C	13 h 09	18	Strong coverage
October	5.2°C	0.9°C	129 mm	16.3	8.6°C	8 h 47	5	Strong coverage
November	2.1°C	-1.9°C	93 mm	13.3	7.4°C	3 h 39	5	Strong coverage
December	0.3°C	-3.9°C	110 mm	15.4	6.3°C	none	5	Strong coverage

What has changed

Tromsø runs +1.8°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

+0.9

Feb

+1.9

Mar

+1.6

Apr

+1.8

May

+2.1

Jun

+1.3

Jul

+1.8

Aug

+2.0

Sep

+2.9

Oct

+1.2

Nov

+1.8

Dec

+1.7

July daytime highs, 2011–2025. Last recorded: 18.7°C.

Records at TROMSO, 1920–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	8.4°C4 Jan 1993	-18.3°C27 Jan 1979	46 mm20 Jan 1925	291 mm1941 · driest 4 mm in 2014	106
February	8.5°C22 Feb 2025	-18.4°C3 Feb 1966	49 mm22 Feb 1961	233 mm1975 · driest 3 mm in 2018	106
March	9.7°C12 Mar 2022	-17.0°C15 Mar 1978	41 mm29 Mar 2000	209 mm2025 · driest 6 mm in 1934	106
April	17.0°C29 Apr 2016	-14.3°C20 Apr 1929	35 mm15 Apr 1962	193 mm2021 · driest 5 mm in 1983	106
May	26.6°C31 May 2013	-6.6°C5 May 1926	43 mm2 May 1990	130 mm1935 · driest 8 mm in 1967	106
June	29.9°C28 Jun 2022	-2.5°C4 Jun 1923	27 mm13 Jun 1961	137 mm1961 · driest 6 mm in 1971	106
July	30.2°C1 Jul 1972	0.7°C3 Jul 1965	50 mm2 Jul 2013	174 mm1999 · driest 0 mm in 1956	107
August	28.4°C1 Aug 2018	1.1°C31 Aug 2007	47 mm31 Aug 1928	203 mm1983 · driest 15 mm in 1953	106
September	23.4°C9 Sep 2024	-4.3°C27 Sep 1986	47 mm3 Sep 1924	215 mm2009 · driest 3 mm in 2017	106
October	18.6°C1 Oct 2017	-9.6°C30 Oct 1992	64 mm3 Oct 1964	308 mm1985 · driest 10 mm in 1974	106
November	11.9°C2 Nov 2005	-14.2°C29 Nov 1925	50 mm8 Nov 1975	325 mm2024 · driest 9 mm in 2000	106
December	9.7°C1 Dec 1984	-16.8°C29 Dec 1978	42 mm11 Dec 1935	260 mm1975 · driest 6 mm in 1966	106

Typical days per month at TROMSO, 1991–2020
Month	Days 25°C+	Frost nights	Heavy rain (10 mm+)
January	0	28	4
February	0	26	3
March	0	27	3
April	0	20	2
May	0	7	1
June	<1	<1	2
July	<1	0	2
August	<1	0	3
September	0	<1	4
October	0	13	5
November	0	21	3
December	0	26	4

How often, not how much — every day in TROMSO’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	0%	46%	11%	58%	-4.1–1.0°C
February	0%	46%	10%	60%	-4.4–1.0°C
March	0%	45%	9%	59%	-2.2–2.1°C
April	0%	40%	6%	52%	1.3–5.6°C
May	<1%	36%	4%	47%	5.2–10.8°C
June	7%	36%	5%	48%	10.1–15.2°C
July	17%	37%	6%	48%	13.1–19.0°C
August	8%	42%	8%	58%	12.4–16.3°C
September	<1%	52%	12%	69%	8.0–12.2°C
October	0%	53%	14%	70%	2.5–7.2°C
November	0%	46%	11%	60%	-0.7–3.5°C
December	0%	46%	11%	60%	-2.8–2.4°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1925Each stripe is one year’s mean temperature against the 101-year average. Warmest: 2024. Coolest: 1955.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 3133895
NOAA station: NO000001026 · TROMSO
Station distance: 1.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 69.65°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 28 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from TROMSO is what differs

Tromsdalen→Stordalstrand→Storeng→Horsnes→Elsnes→Tomasjord→

Or put two places side by side: Tromsø vs Tromsdalen

Best time to visitTromsø.

July

July

July

The whole year,without the guesswork.

Tromsø runs +1.8°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Tromsø.

The whole year,
without the guesswork.

Tromsø runs +1.8°C
on the 1961–1990 baseline.

Nearby, measured,
and named.