Norway · 1991–2020

Best time to visit
Halden.

July leads for comfortable weather in Halden: typically 22°C by day, 13.8°C at night, with 72 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high22°C

Typical low13.8°C

Rain in July72 mm

Comfort

July

July · June · August

80climate match

Beach

July

July · June · August

45climate match

Outdoors

June

June · May · July

86climate match

The weakest month is January, scoring 5 against July’s 80 — days reach only 1.2°C, 23° 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

51.2° / -3.7°

Feb

51.4° / -3.9°

Mar

55.3° / -1.8°

Apr

2811° / 2.4°

May

5216.4° / 7.2°

Jun

7120° / 11.3°

Jul

8022° / 13.8°

Aug

7120.9° / 13.1°

Sep

5216.4° / 9.4°

Oct

1910.4° / 5°

Nov

55.6° / 1.1°

Dec

52.4° / -2.5°

Monthly climate evidence for Halden — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 29 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	1.2°C	-3.7°C	75 mm	10.9	3.8°C	6 h 52	5	Strong coverage
February	1.4°C	-3.9°C	54 mm	9.1	2.7°C	9 h 07	5	Strong coverage
March	5.3°C	-1.8°C	45 mm	7.3	3.0°C	11 h 34	5	Strong coverage
April	11°C	2.4°C	49 mm	7.8	6.1°C	14 h 21	28	Strong coverage
May	16.4°C	7.2°C	56 mm	9.2	10.7°C	16 h 53	52	Strong coverage
June	20°C	11.3°C	66 mm	8.3	14.9°C	18 h 29	71	Strong coverage
July	22°C	13.8°C	72 mm	9.5	17.7°C	17 h 50	80	Strong coverage
August	20.9°C	13.1°C	93 mm	10.6	18.2°C	15 h 30	71	Strong coverage
September	16.4°C	9.4°C	84 mm	9.6	15.4°C	12 h 44	52	Strong coverage
October	10.4°C	5°C	109 mm	11.6	11.8°C	10 h 04	19	Strong coverage
November	5.6°C	1.1°C	102 mm	12.7	8.7°C	7 h 34	5	Strong coverage
December	2.4°C	-2.5°C	89 mm	12.3	5.8°C	6 h 11	5	Strong coverage

Records at SARPSBORG, 1991–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	10.5°C17 Jan 2000	-23.3°C16 Jan 2024	40 mm2 Jan 2014	177 mm2008 · driest 5 mm in 2010	32
February	11.6°C26 Feb 2021	-23.0°C14 Feb 1994	34 mm14 Feb 2022	128 mm2014 · driest 19 mm in 1994	32
March	21.4°C27 Mar 2012	-21.1°C7 Mar 2006	40 mm12 Mar 2026	107 mm2019 · driest 0 mm in 1996	32
April	27.0°C29 Apr 2000	-6.0°C9 Apr 2013	30 mm12 Apr 2011	103 mm2001 · driest 7 mm in 2022	32
May	30.0°C25 May 2012	-2.6°C1 May 2017	32 mm28 May 2024	115 mm2015 · driest 7 mm in 1994	32
June	31.5°C29 Jun 2009	2.0°C4 Jun 2009	40 mm21 Jun 2020	120 mm2020 · driest 18 mm in 1992	32
July	33.5°C27 Jul 2018	7.0°C7 Jul 1993	49 mm8 Jul 2007	152 mm2020 · driest 4 mm in 1994	32
August	30.4°C9 Aug 2004	5.2°C30 Aug 2007	53 mm26 Aug 2023	272 mm2014 · driest 33 mm in 2002	32
September	27.5°C5 Sep 2024	-1.0°C18 Sep 1993	45 mm27 Sep 2019	202 mm2011 · driest 19 mm in 2014	32
October	18.8°C11 Oct 2005	-8.5°C24 Oct 2003	55 mm1 Oct 2021	268 mm2014 · driest 10 mm in 2015	32
November	16.0°C6 Nov 2020	-12.5°C30 Nov 2010	39 mm20 Nov 2006	268 mm2000 · driest 14 mm in 2001	31
December	11.5°C26 Dec 2011	-26.0°C31 Dec 2002	35 mm9 Dec 2011	191 mm2011 · driest 21 mm in 1995	32

Typical days per month at SARPSBORG, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	22	3
February	0	0	22	1
March	0	0	19	1
April	<1	0	7	2
May	2	0	<1	2
June	4	<1	0	2
July	6	<1	0	2
August	4	<1	0	3
September	0	0	<1	3
October	0	0	4	4
November	0	0	12	4
December	0	0	20	3

How often, not how much — every day in SARPSBORG’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%	31%	7%	40%	-2.4–4.2°C
February	0%	27%	4%	31%	-1.7–4.3°C
March	<1%	22%	3%	24%	2.8–8.0°C
April	3%	24%	5%	28%	8.7–13.4°C
May	20%	27%	5%	33%	14.2–18.2°C
June	41%	27%	7%	34%	18.2–22.8°C
July	54%	31%	9%	40%	19.9–25.2°C
August	45%	33%	11%	42%	19.7–22.7°C
September	10%	30%	9%	39%	15.0–18.4°C
October	0%	35%	10%	46%	8.5–12.1°C
November	0%	36%	10%	47%	2.2–7.8°C
December	0%	35%	8%	45%	-2.7–5.0°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.

1992Each stripe is one year’s mean temperature against the 30-year average. Warmest: 2020. Coolest: 2010.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 3154209
NOAA station: NOE00109849 · SARPSBORG
Station distance: 23.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 26 usable years
Daylight: Calculated from latitude 59.12°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 29 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 SARPSBORG is what differs

Fredrikstad→Sarpsborg→Askim→Mysen→Rakkestad→Spydeberg→

Or put two places side by side: Halden vs Fredrikstad

Best time to visitHalden.

July

July

June

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Halden.

The whole year,
without the guesswork.

Nearby, measured,
and named.