Finland · 1991–2020

Best time to visit
Vuolenkoski.

July leads for comfortable weather in Vuolenkoski: typically 22.8°C by day, 12.8°C at night, with 71 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high22.8°C

Typical low12.8°C

Rain in July71 mm

Comfort

July

July · August · June

81climate match

Beach

July

July · August · June

45climate match

Outdoors

June

June · August · July

86climate match

The weakest month is January, scoring 5 against July’s 81 — days reach only -3.3°C, 27° 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

5-3.3° / -8.9°

Feb

5-3° / -9.6°

Mar

51.8° / -6.2°

Apr

178.7° / -0.8°

May

5016° / 4.7°

Jun

6820.2° / 9.8°

Jul

8122.8° / 12.8°

Aug

7320.8° / 11.5°

Sep

4714.7° / 7°

Oct

117.5° / 2.2°

Nov

52.2° / -1.7°

Dec

5-1.1° / -5.6°

Monthly climate evidence for Vuolenkoski — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-3.3°C	-8.9°C	45 mm	11.2	6 h 21	5	Strong coverage
February	-3°C	-9.6°C	36 mm	9.6	8 h 52	5	Strong coverage
March	1.8°C	-6.2°C	33 mm	8.4	11 h 31	5	Strong coverage
April	8.7°C	-0.8°C	30 mm	7	14 h 33	17	Strong coverage
May	16°C	4.7°C	43 mm	7.8	17 h 21	50	Strong coverage
June	20.2°C	9.8°C	66 mm	9.8	19 h 14	68	Strong coverage
July	22.8°C	12.8°C	71 mm	9.9	18 h 27	81	Strong coverage
August	20.8°C	11.5°C	67 mm	9.6	15 h 48	73	Strong coverage
September	14.7°C	7°C	53 mm	9	12 h 47	47	Strong coverage
October	7.5°C	2.2°C	65 mm	11.1	9 h 53	11	Strong coverage
November	2.2°C	-1.7°C	56 mm	11.3	7 h 08	5	Strong coverage
December	-1.1°C	-5.6°C	50 mm	11.8	5 h 33	5	Strong coverage

What has changed

Vuolenkoski runs +2.2°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

+2.4

Feb

+2.9

Mar

+2.3

Apr

+2.0

May

+1.4

Jun

+1.5

Jul

+2.2

Aug

+2.5

Sep

+2.8

Oct

+1.1

Nov

+2.2

Dec

+2.9

July daytime highs, 2011–2025. Last recorded: 26.2°C.

Records at HEINOLA ASEMANTAUS, 1959–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	8.1°C15 Jan 2020	-37.5°C12 Jan 1987	23 mm1 Jan 1962	87 mm1990 · driest 10 mm in 1996	68
February	9.3°C23 Feb 1990	-36.6°C3 Feb 1966	20 mm16 Feb 2024	82 mm2016 · driest 4 mm in 1994	68
March	16.0°C28 Mar 2007	-31.4°C19 Mar 1963	20 mm21 Mar 1974	64 mm2023 · driest 3 mm in 1969	68
April	23.7°C29 Apr 1998	-19.0°C3 Apr 1960	26 mm11 Apr 1982	71 mm1970 · driest 6 mm in 2002	68
May	30.8°C19 May 2014	-6.2°C2 May 1995	29 mm11 May 2019	119 mm2021 · driest 2 mm in 2024	68
June	32.7°C22 Jun 2021	-1.3°C6 Jun 1962	68 mm30 Jun 2020	125 mm1981 · driest 1 mm in 1970	68
July	34.9°C28 Jul 2010	3.4°C17 Jul 1987	70 mm27 Jul 1979	212 mm1979 · driest 12 mm in 1973	68
August	33.8°C7 Aug 2010	-0.8°C29 Aug 1966	52 mm12 Aug 1972	165 mm1972 · driest 8 mm in 1996	67
September	27.5°C5 Sep 2024	-6.1°C30 Sep 1993	59 mm2 Sep 2004	167 mm1962 · driest 5 mm in 2007	67
October	19.5°C14 Oct 2018	-14.0°C23 Oct 2002	31 mm31 Oct 2006	161 mm2006 · driest 13 mm in 2002	67
November	12.9°C12 Nov 2022	-21.2°C22 Nov 1990	25 mm30 Nov 2005	128 mm1996 · driest 5 mm in 1993	67
December	11.0°C21 Dec 2015	-33.5°C17 Dec 1978	26 mm20 Dec 1970	115 mm2017 · driest 9 mm in 1978	67

Typical days per month at HEINOLA ASEMANTAUS, 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	27	<1
April	0	0	17	<1
May	2	0	4	1
June	4	<1	<1	2
July	9	1	0	2
August	5	<1	0	2
September	0	0	2	1
October	0	0	10	2
November	0	0	18	1
December	0	0	25	<1

How often, not how much — every day in HEINOLA ASEMANTAUS’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%	2%	48%	-9.2–-0.7°C
February	0%	31%	1%	39%	-8.2–1.0°C
March	0%	26%	<1%	30%	-1.7–4.2°C
April	1%	24%	2%	27%	5.4–10.4°C
May	19%	24%	3%	28%	13.0–18.4°C
June	40%	30%	5%	37%	18.0–22.8°C
July	53%	33%	7%	43%	19.6–25.3°C
August	37%	34%	7%	45%	17.3–22.7°C
September	6%	33%	5%	43%	11.2–16.6°C
October	0%	36%	5%	49%	5.0–9.7°C
November	0%	39%	3%	53%	-1.0–4.6°C
December	0%	38%	2%	51%	-6.4–2.1°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.

1960Each stripe is one year’s mean temperature against the 66-year average. Warmest: 2020. Coolest: 1985.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 631194
NOAA station: FIE00143066 · HEINOLA ASEMANTAUS
Station distance: 14.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 61.08°, mid-month, sunrise to sunset including refraction. Not a station measurement.
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 HEINOLA ASEMANTAUS is what differs

Heinola→Jaala→Ylä-Järvinen→Vuorenmylly→Vierumäki→Vesala→

Or put two places side by side: Vuolenkoski vs Heinola

Best time to visitVuolenkoski.

July

July

June

The whole year,without the guesswork.

Vuolenkoski runs +2.2°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Vuolenkoski.

The whole year,
without the guesswork.

Vuolenkoski runs +2.2°C
on the 1961–1990 baseline.

Nearby, measured,
and named.