Finland · 1991–2020

Best time to visit
Raseborg.

July leads for comfortable weather in Raseborg: typically 21°C by day, 14.3°C at night, with 51 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high21°C

Typical low14.3°C

Rain in July51 mm

Comfort

July

July · August · June

83climate match

Beach

July

July · August · June

50climate match

Outdoors

June

June · July · August

83climate match

The weakest month is January, scoring 5 against July’s 83 — days reach only 0°C, 24° 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

50° / -4.5°

Feb

5-0.8° / -5.6°

Mar

51.9° / -3.5°

Apr

146.8° / 0.8°

May

4413.1° / 5.8°

Jun

6517.6° / 10.6°

Jul

8321° / 14.3°

Aug

7320° / 13.9°

Sep

5515.2° / 10°

Oct

209.4° / 5.1°

Nov

55° / 1.3°

Dec

52.2° / -1.9°

Monthly climate evidence for Raseborg — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 12 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	0°C	-4.5°C	55 mm	11.1	2.6°C	6 h 40	5	Strong coverage
February	-0.8°C	-5.6°C	39 mm	8.6	1.2°C	9 h 01	5	Strong coverage
March	1.9°C	-3.5°C	36 mm	8.2	1.0°C	11 h 33	5	Strong coverage
April	6.8°C	0.8°C	31 mm	6.7	2.4°C	14 h 26	14	Strong coverage
May	13.1°C	5.8°C	33 mm	6.4	6.3°C	17 h 05	44	Strong coverage
June	17.6°C	10.6°C	49 mm	7.7	11.4°C	18 h 48	65	Strong coverage
July	21°C	14.3°C	51 mm	7.1	16.1°C	18 h 05	83	Strong coverage
August	20°C	13.9°C	78 mm	9.2	17.2°C	15 h 37	73	Strong coverage
September	15.2°C	10°C	52 mm	8.6	14.7°C	12 h 45	55	Strong coverage
October	9.4°C	5.1°C	76 mm	11.6	10.8°C	9 h 59	20	Strong coverage
November	5°C	1.3°C	71 mm	11.8	7.6°C	7 h 23	5	Strong coverage
December	2.2°C	-1.9°C	62 mm	12.6	4.9°C	5 h 55	5	Strong coverage

What has changed

Raseborg runs +1.9°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

+2.2

Feb

+2.8

Mar

+2.7

Apr

+2.2

May

+1.5

Jun

+0.9

Jul

+1.5

Aug

+1.4

Sep

+2.0

Oct

+1.2

Nov

+2.0

Dec

+2.3

July daytime highs, 2011–2025. Last recorded: 22.2°C.

Records at HANKO TVARMINNE, 1963–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	8.0°C6 Jan 1973	-33.9°C10 Jan 1987	28 mm31 Jan 2004	98 mm2005 · driest 7 mm in 1996	64
February	9.1°C28 Feb 2021	-35.2°C3 Feb 1966	32 mm16 Feb 2024	98 mm1990 · driest 2 mm in 1994	64
March	14.4°C26 Mar 2007	-22.8°C15 Mar 1969	20 mm6 Mar 2002	77 mm1994 · driest 3 mm in 2022	64
April	19.7°C22 Apr 2014	-16.0°C2 Apr 1963	36 mm2 Apr 2024	92 mm1977 · driest 2 mm in 2009	64
May	25.6°C30 May 1963	-3.4°C1 May 1978	25 mm4 May 1988	80 mm1968 · driest 2 mm in 2024	64
June	30.9°C27 Jun 1986	2.5°C10 Jun 1982	35 mm24 Jun 1980	114 mm1987 · driest 6 mm in 1970	64
July	31.1°C11 Jul 1983	4.6°C1 Jul 1964	63 mm12 Jul 1996	163 mm1996 · driest 1 mm in 2006	63
August	30.3°C5 Aug 1975	4.5°C29 Aug 1966	71 mm14 Aug 1992	212 mm2023 · driest 6 mm in 1996	63
September	23.6°C6 Sep 1968	-2.4°C28 Sep 1986	38 mm17 Sep 1968	134 mm1987 · driest 13 mm in 2005	63
October	17.6°C4 Oct 1973	-9.2°C31 Oct 1992	38 mm31 Oct 2006	192 mm2006 · driest 18 mm in 1979	63
November	14.4°C12 Nov 2022	-14.9°C30 Nov 1980	34 mm20 Nov 2024	171 mm1996 · driest 7 mm in 1993	63
December	9.5°C26 Dec 2011	-31.3°C31 Dec 1978	24 mm21 Dec 2003	156 mm2011 · driest 13 mm in 1963	63

Typical days per month at HANKO TVARMINNE, 1991–2020
Month	Days 25°C+	Frost nights	Heavy rain (10 mm+)
January	0	24	1
February	0	23	<1
March	0	23	<1
April	0	11	<1
May	<1	<1	<1
June	<1	0	1
July	4	0	1
August	1	0	3
September	0	0	2
October	0	4	2
November	0	10	2
December	0	19	1

How often, not how much — every day in HANKO TVARMINNE’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%	35%	3%	47%	-4.8–2.5°C
February	0%	28%	2%	33%	-5.8–2.2°C
March	0%	26%	1%	29%	-1.4–4.3°C
April	0%	23%	2%	25%	3.9–8.5°C
May	4%	20%	3%	20%	10.7–14.4°C
June	24%	23%	4%	24%	15.7–19.7°C
July	44%	25%	5%	30%	18.4–23.0°C
August	32%	30%	8%	39%	17.7–21.0°C
September	2%	33%	5%	43%	12.6–16.5°C
October	0%	37%	7%	50%	7.2–11.3°C
November	0%	41%	5%	57%	2.1–6.9°C
December	0%	40%	4%	53%	-1.7–4.5°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.

1963Each stripe is one year’s mean temperature against the 63-year average. Warmest: 2020. Coolest: 1987.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 639853
NOAA station: FIE00142025 · HANKO TVARMINNE
Station distance: 18.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 59.98°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 12 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 HANKO TVARMINNE is what differs

Ekenäs→Pölckå→Vitsand→Tvärminne→Trollböle→Tenala→

Or put two places side by side: Raseborg vs Ekenäs

Best time to visitRaseborg.

July

July

June

The whole year,without the guesswork.

Raseborg runs +1.9°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Raseborg.

The whole year,
without the guesswork.

Raseborg runs +1.9°C
on the 1961–1990 baseline.

Nearby, measured,
and named.