Finland · 1991–2020

Best time to visit
Suonenjoki.

July leads for comfortable weather in Suonenjoki: typically 21.8°C by day, 11.2°C at night, with 104 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high21.8°C

Typical low11.2°C

Rain in July104 mm

Comfort

July

July · August · June

69climate match

Beach

July

July · August · June

30climate match

Outdoors

August

August · June · July

83climate match

The weakest month is January, scoring 5 against July’s 69 — days reach only -4°C, 28° 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

5-4° / -10.9°

Feb

5-4.9° / -13.1°

Mar

50.6° / -8.5°

Apr

107.2° / -2.2°

May

3814.3° / 2.7°

Jun

5919.3° / 8.3°

Jul

6921.8° / 11.2°

Aug

6419.6° / 9.8°

Sep

3913.4° / 5.2°

Oct

56.2° / 1.1°

Nov

50.2° / -4.1°

Dec

5-2.7° / -8.6°

Monthly climate evidence for Suonenjoki — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-4°C	-10.9°C	47 mm	11.4	5 h 52	5	Good coverage
February	-4.9°C	-13.1°C	37 mm	9.7	8 h 38	5	Good coverage
March	0.6°C	-8.5°C	35 mm	8.9	11 h 29	5	Good coverage
April	7.2°C	-2.2°C	32 mm	7.6	14 h 43	10	Good coverage
May	14.3°C	2.7°C	51 mm	8.9	17 h 48	38	Good coverage
June	19.3°C	8.3°C	81 mm	10.9	20 h	59	Good coverage
July	21.8°C	11.2°C	104 mm	11.6	19 h 02	69	Good coverage
August	19.6°C	9.8°C	69 mm	11.1	16 h 05	64	Good coverage
September	13.4°C	5.2°C	51 mm	9.5	12 h 50	39	Good coverage
October	6.2°C	1.1°C	64 mm	12.5	9 h 45	5	Good coverage
November	0.2°C	-4.1°C	48 mm	10.6	6 h 45	5	Good coverage
December	-2.7°C	-8.6°C	54 mm	11.8	4 h 57	5	Good coverage

Records at RAUTALAMPI RASTU, 1975–2008
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	7.7°C28 Jan 1992	-42.0°C8 Jan 1987	28 mm25 Jan 2002	87 mm2002 · driest 15 mm in 1996	33
February	10.5°C23 Feb 1990	-39.0°C15 Feb 1978	14 mm3 Feb 1988	72 mm1995 · driest 6 mm in 1994	33
March	13.9°C28 Mar 2007	-33.9°C3 Mar 1977	15 mm24 Mar 1994	69 mm1994 · driest 5 mm in 2005	33
April	23.4°C25 Apr 2001	-22.3°C12 Apr 1988	23 mm2 Apr 1985	76 mm1977 · driest 10 mm in 2004	33
May	27.8°C17 May 1984	-8.2°C2 May 1976	37 mm26 May 1995	116 mm2003 · driest 2 mm in 1978	33
June	30.6°C26 Jun 1999	-3.6°C11 Jun 1984	74 mm27 Jun 1980	139 mm1980 · driest 8 mm in 1986	33
July	31.1°C28 Jul 1994	-0.3°C19 Jul 1978	77 mm28 Jul 2004	162 mm1997 · driest 28 mm in 1982	33
August	29.6°C1 Aug 2003	-2.9°C28 Aug 1984	40 mm11 Aug 1990	148 mm1992 · driest 19 mm in 2006	33
September	24.0°C2 Sep 1991	-6.7°C30 Sep 1978	37 mm28 Sep 1975	112 mm1983 · driest 18 mm in 2000	33
October	15.7°C1 Oct 1975	-18.3°C31 Oct 1988	27 mm1 Oct 1999	119 mm1994 · driest 13 mm in 2002	33
November	11.2°C5 Nov 2005	-29.8°C30 Nov 1983	35 mm8 Nov 1977	110 mm1996 · driest 7 mm in 1993	33
December	7.8°C10 Dec 2006	-35.5°C30 Dec 1978	17 mm6 Dec 1987	83 mm1983 · driest 14 mm in 1978	33

Typical days per month at RAUTALAMPI RASTU, 1991–2020
Month	Days 25°C+	Frost nights	Heavy rain (10 mm+)
January	0	30	<1
February	0	27	<1
March	0	28	<1
April	0	20	<1
May	<1	8	1
June	3	<1	2
July	6	0	3
August	3	0	2
September	0	4	1
October	0	12	1
November	0	23	<1
December	0	27	1

How often, not how much — every day in RAUTALAMPI RASTU’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%	<1%	52%	-10.9–-2.0°C
February	0%	31%	<1%	39%	-10.4–-0.7°C
March	0%	29%	1%	34%	-2.7–2.2°C
April	<1%	25%	2%	27%	4.0–9.0°C
May	15%	26%	4%	32%	12.2–16.9°C
June	33%	33%	7%	42%	17.0–21.7°C
July	45%	36%	9%	50%	19.4–23.8°C
August	27%	38%	7%	48%	16.5–21.8°C
September	3%	33%	5%	43%	10.6–14.6°C
October	0%	37%	4%	51%	3.7–8.1°C
November	0%	39%	2%	51%	-2.8–3.4°C
December	0%	37%	3%	48%	-8.7–0.4°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.

1976Each stripe is one year’s mean temperature against the 32-year average. Warmest: 2000. Coolest: 1985.2007

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 635692
NOAA station: FIE00144687 · RAUTALAMPI RASTU
Station distance: 20.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 17 usable years
Daylight: Calculated from latitude 62.62°, 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 RAUTALAMPI RASTU is what differs

Karttula→Rautalampi→Konnevesi→Viippero→Vieru→Venetmäki→

Or put two places side by side: Suonenjoki vs Karttula

Best time to visitSuonenjoki.

July

July

August

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Suonenjoki.

The whole year,
without the guesswork.

Nearby, measured,
and named.