Finland · 1991–2020

Best time to visit
Karjalohja.

July leads for comfortable weather in Karjalohja: typically 22.8°C by day, 12.2°C at night, with 75 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high22.8°C

Typical low12.2°C

Rain in July75 mm

Comfort

July

July · August · June

80climate match

Beach

July

July · August · June

44climate match

Outdoors

June

June · August · July

83climate match

The weakest month is January, scoring 5 against July’s 80 — days reach only -1.7°C, 26° 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

5-1.7° / -7°

Feb

5-2.8° / -9.3°

Mar

52.1° / -5.5°

Apr

189.1° / -0.7°

May

4815.7° / 3.9°

Jun

6419.7° / 8.8°

Jul

8022.8° / 12.2°

Aug

6820.7° / 11.1°

Sep

4614.8° / 6.8°

Oct

118.1° / 2.4°

Nov

52.6° / -1.6°

Dec

5-0.3° / -5.1°

Monthly climate evidence for Karjalohja — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 41 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	-1.7°C	-7°C	62 mm	11.6	2.6°C	6 h 35	5	Good coverage
February	-2.8°C	-9.3°C	43 mm	8.6	1.2°C	8 h 59	5	Good coverage
March	2.1°C	-5.5°C	39 mm	8.3	0.9°C	11 h 33	5	Good coverage
April	9.1°C	-0.7°C	36 mm	7.5	2.4°C	14 h 28	18	Good coverage
May	15.7°C	3.9°C	40 mm	7.2	6.3°C	17 h 09	48	Good coverage
June	19.7°C	8.8°C	66 mm	9.8	11.4°C	18 h 54	64	Good coverage
July	22.8°C	12.2°C	75 mm	8.5	16.1°C	18 h 10	80	Good coverage
August	20.7°C	11.1°C	91 mm	10.3	17.2°C	15 h 40	68	Good coverage
September	14.8°C	6.8°C	60 mm	9.2	14.7°C	12 h 46	46	Good coverage
October	8.1°C	2.4°C	78 mm	11.7	10.8°C	9 h 58	11	Good coverage
November	2.6°C	-1.6°C	73 mm	11.7	7.6°C	7 h 20	5	Good coverage
December	-0.3°C	-5.1°C	64 mm	11.6	4.8°C	5 h 50	5	Good coverage

Records at SALO SUOMUSJARVI, 1988–2012
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	8.0°C10 Jan 2007	-30.6°C7 Jan 2003	30 mm23 Jan 1995	119 mm2005 · driest 7 mm in 1996	24
February	10.0°C23 Feb 1990	-29.5°C8 Feb 1999	23 mm7 Feb 1990	116 mm1990 · driest 2 mm in 1994	25
March	15.9°C27 Mar 2007	-24.4°C4 Mar 2005	23 mm8 Mar 1994	83 mm1994 · driest 5 mm in 2005	25
April	24.0°C27 Apr 1993	-13.5°C3 Apr 1998	18 mm15 Apr 2001	64 mm2001 · driest 5 mm in 2002	25
May	29.6°C30 May 1995	-5.0°C3 May 1999	32 mm4 May 1988	87 mm1995 · driest 0 mm in 1993	25
June	30.2°C28 Jun 1988	-0.6°C7 Jun 2009	34 mm30 Jun 2004	124 mm2012 · driest 28 mm in 1999	25
July	32.5°C28 Jul 1994	2.7°C6 Jul 2009	65 mm24 Jul 1993	158 mm2011 · driest 1 mm in 2006	25
August	31.8°C11 Aug 1992	1.1°C31 Aug 1989	46 mm14 Aug 1992	189 mm2005 · driest 10 mm in 1996	24
September	24.4°C2 Sep 1991	-5.0°C30 Sep 1993	35 mm9 Sep 2008	149 mm2001 · driest 19 mm in 1993	24
October	16.3°C1 Oct 2000	-15.3°C31 Oct 1992	29 mm31 Oct 2006	180 mm2008 · driest 29 mm in 2010	24
November	10.9°C2 Nov 2011	-21.9°C27 Nov 1989	27 mm12 Nov 2004	169 mm1996 · driest 10 mm in 1993	24
December	9.4°C6 Dec 2006	-30.0°C25 Dec 1995	25 mm12 Dec 1999	172 mm2011 · driest 7 mm in 2002	24

Typical days per month at SALO SUOMUSJARVI, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	28	1
February	0	0	26	1
March	0	0	26	<1
April	0	0	17	<1
May	1	0	5	1
June	4	0	<1	2
July	9	<1	0	2
August	5	<1	0	3
September	0	0	2	2
October	0	0	10	2
November	0	0	18	2
December	0	0	24	1

How often, not how much — every day in SALO SUOMUSJARVI’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%	37%	4%	50%	-4.3–1.0°C
February	0%	30%	3%	38%	-6.4–1.9°C
March	0%	28%	2%	36%	0.0–3.9°C
April	2%	26%	2%	29%	6.7–11.4°C
May	17%	22%	3%	25%	13.9–17.8°C
June	38%	29%	6%	36%	17.5–22.2°C
July	61%	30%	7%	38%	20.2–25.1°C
August	44%	34%	9%	49%	18.2–23.6°C
September	6%	35%	6%	47%	12.7–16.0°C
October	0%	36%	7%	48%	5.8–10.2°C
November	0%	40%	8%	55%	-0.7–5.1°C
December	0%	40%	5%	55%	-4.4–2.9°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.

1989Each stripe is one year’s mean temperature against the 23-year average. Warmest: 2008. Coolest: 2010.2011

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 654012
NOAA station: FIE00142055 · SALO SUOMUSJARVI
Station distance: 9.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 21 usable years
Daylight: Calculated from latitude 60.24°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 41 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 SALO SUOMUSJARVI is what differs

Pojo→Kisko→Kiikala→Suomusjärvi→Sammatti→Yltäkylä→

Or put two places side by side: Karjalohja vs Pojo

Best time to visitKarjalohja.

July

July

June

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Karjalohja.

The whole year,
without the guesswork.

Nearby, measured,
and named.