Home·Finland·Southwest Finland

Finland · 1991–2020

Best time to visit
Mynämäki.

July leads for comfortable weather in Mynämäki: typically 22.7°C by day, 12.3°C at night, with 66 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high22.7°C

Typical low12.3°C

Rain in July66 mm

Comfort

July

July · August · June

82climate match

Beach

July

July · August · June

46climate match

Outdoors

June

June · August · July

87climate match

The weakest month is January, scoring 5 against July’s 82 — days reach only -0.6°C, 25° 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

5-0.6° / -6°

Feb

5-1.7° / -8.1°

Mar

52.6° / -4.8°

Apr

209° / -0.2°

May

4815.2° / 4.2°

Jun

6719.4° / 9.1°

Jul

8222.7° / 12.3°

Aug

7321.5° / 11.3°

Sep

5115.9° / 7.1°

Oct

168.8° / 2.9°

Nov

53° / -1.3°

Dec

50.5° / -4.4°

Monthly climate evidence for Mynämäki — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 39 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	-0.6°C	-6°C	50 mm	10.3	2.0°C	6 h 28	5	Good coverage
February	-1.7°C	-8.1°C	39 mm	8.3	0.9°C	8 h 55	5	Good coverage
March	2.6°C	-4.8°C	36 mm	7.6	0.8°C	11 h 32	5	Good coverage
April	9°C	-0.2°C	30 mm	6.9	2.3°C	14 h 30	20	Good coverage
May	15.2°C	4.2°C	33 mm	6.4	6.2°C	17 h 15	48	Good coverage
June	19.4°C	9.1°C	52 mm	8.3	11.4°C	19 h 04	67	Good coverage
July	22.7°C	12.3°C	66 mm	8.3	16.0°C	18 h 18	82	Good coverage
August	21.5°C	11.3°C	76 mm	10	17.1°C	15 h 44	73	Good coverage
September	15.9°C	7.1°C	56 mm	8.3	14.1°C	12 h 47	51	Good coverage
October	8.8°C	2.9°C	70 mm	11.2	10.1°C	9 h 56	16	Good coverage
November	3°C	-1.3°C	60 mm	11.3	7.0°C	7 h 14	5	Good coverage
December	0.5°C	-4.4°C	55 mm	10.8	4.3°C	5 h 42	5	Good coverage

Records at MIETOINEN SAARI, 1959–2007
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	8.2°C10 Jan 2007	-34.3°C10 Jan 1987	27 mm24 Jan 2002	91 mm1984 · driest 5 mm in 1972	49
February	10.0°C23 Feb 1990	-35.8°C3 Feb 1966	17 mm19 Feb 1990	84 mm1990 · driest 2 mm in 1994	49
March	15.3°C27 Mar 2007	-25.6°C1 Mar 1960	29 mm11 Mar 1989	79 mm1994 · driest 3 mm in 1960	49
April	22.6°C30 Apr 1998	-18.1°C1 Apr 1963	21 mm17 Apr 1972	64 mm1973 · driest 3 mm in 2002	49
May	29.1°C31 May 1995	-6.2°C9 May 1959	24 mm1 May 2003	105 mm2003 · driest 6 mm in 1999	49
June	30.3°C14 Jun 1977	-2.0°C1 Jun 1977	55 mm15 Jun 1961	124 mm1961 · driest 3 mm in 1969	48
July	33.3°C15 Jul 2003	2.5°C15 Jul 1975	66 mm17 Jul 1985	140 mm1979 · driest 0 mm in 1994	48
August	31.9°C6 Aug 2006	-0.1°C15 Aug 1978	67 mm27 Aug 2001	227 mm1967 · driest 17 mm in 1996	48
September	27.3°C5 Sep 1968	-7.2°C30 Sep 1976	43 mm6 Sep 1997	157 mm2001 · driest 5 mm in 2003	48
October	17.9°C4 Oct 1973	-15.0°C31 Oct 1992	33 mm7 Oct 1980	157 mm1980 · driest 20 mm in 1979	48
November	11.4°C7 Nov 1967	-20.5°C25 Nov 1971	30 mm18 Nov 1981	135 mm1981 · driest 8 mm in 1993	48
December	9.2°C15 Dec 2006	-34.5°C31 Dec 1978	36 mm30 Dec 1983	111 mm1983 · driest 6 mm in 2002	48

Typical days per month at MIETOINEN SAARI, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	27	1
February	0	0	26	<1
March	0	0	25	<1
April	0	0	16	<1
May	1	0	4	<1
June	3	<1	<1	2
July	8	1	0	2
August	6	<1	0	2
September	<1	0	2	2
October	0	0	9	2
November	0	0	17	1
December	0	0	23	1

How often, not how much — every day in MIETOINEN SAARI’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%	32%	2%	42%	-6.1–1.1°C
February	0%	25%	1%	27%	-6.7–1.5°C
March	0%	24%	1%	28%	-0.9–3.8°C
April	<1%	24%	2%	27%	5.3–10.1°C
May	14%	21%	2%	24%	12.8–17.1°C
June	37%	24%	5%	28%	16.8–22.1°C
July	51%	31%	7%	39%	19.2–24.8°C
August	39%	33%	8%	46%	17.9–23.0°C
September	6%	35%	5%	46%	12.6–16.6°C
October	0%	35%	5%	48%	6.5–10.9°C
November	0%	39%	5%	53%	0.7–5.4°C
December	0%	35%	3%	45%	-3.4–2.7°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 47-year average. Warmest: 2000. Coolest: 1985.2006

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 645243
NOAA station: FIE00142421 · MIETOINEN SAARI
Station distance: 9.2 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 60.68°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 39 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 MIETOINEN SAARI is what differs

Laitila→Nousiainen→Vehmaa→Mietoinen→Lemu→Taivassalo→

Or put two places side by side: Mynämäki vs Laitila

Best time to visitMynämäki.

July

July

June

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Mynämäki.

The whole year,
without the guesswork.

Nearby, measured,
and named.