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Finland · 1991–2020

Best time to visit
Piikkiö.

July leads for comfortable weather in Piikkiö: typically 22.5°C by day, 12.2°C at night, with 71 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high22.5°C

Typical low12.2°C

Rain in July71 mm

Comfort

July

July · August · June

80climate match

Beach

July

July · August · June

44climate match

Outdoors

June

June · August · July

87climate match

The weakest month is January, scoring 5 against July’s 80 — days reach only -0.9°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

5-0.9° / -6.9°

Feb

5-1.1° / -7.9°

Mar

52.8° / -5.2°

Apr

198.9° / -0.5°

May

4915.4° / 4.3°

Jun

6719.6° / 9.1°

Jul

8022.5° / 12.2°

Aug

7221.3° / 11.2°

Sep

5216.1° / 7.2°

Oct

179.3° / 2.8°

Nov

54.1° / -0.7°

Dec

51.1° / -4.1°

Monthly climate evidence for Piikkiö — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 34 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	-0.9°C	-6.9°C	54 mm	10.9	2.3°C	6 h 32	5	Strong coverage
February	-1.1°C	-7.9°C	41 mm	8.6	1.0°C	8 h 57	5	Strong coverage
March	2.8°C	-5.2°C	37 mm	7.9	0.9°C	11 h 32	5	Strong coverage
April	8.9°C	-0.5°C	32 mm	6.8	2.4°C	14 h 29	19	Strong coverage
May	15.4°C	4.3°C	35 mm	6.7	6.3°C	17 h 11	49	Strong coverage
June	19.6°C	9.1°C	57 mm	8.3	11.5°C	18 h 58	67	Strong coverage
July	22.5°C	12.2°C	71 mm	8.5	16.1°C	18 h 13	80	Strong coverage
August	21.3°C	11.2°C	78 mm	9.4	17.2°C	15 h 42	72	Strong coverage
September	16.1°C	7.2°C	56 mm	8.6	14.2°C	12 h 46	52	Strong coverage
October	9.3°C	2.8°C	74 mm	10.2	10.3°C	9 h 57	17	Strong coverage
November	4.1°C	-0.7°C	67 mm	11.8	7.3°C	7 h 17	5	Strong coverage
December	1.1°C	-4.1°C	68 mm	11.9	4.6°C	5 h 47	5	Strong coverage

What has changed

Piikkiö runs +2.0°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

+2.1

Feb

+2.8

Mar

+2.5

Apr

+2.2

May

+1.4

Jun

+1.1

Jul

+2.1

Aug

+1.8

Sep

+2.6

Oct

+1.1

Nov

+2.1

Dec

+2.5

July daytime highs, 2011–2025. Last recorded: 25.2°C.

Records at KAARINA YLTOINEN, 1959–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	8.8°C21 Jan 2020	-36.7°C26 Jan 1985	24 mm5 Jan 1960	112 mm2008 · driest 6 mm in 1996	68
February	10.0°C23 Feb 1990	-37.4°C15 Feb 1979	28 mm19 Feb 1989	104 mm2020 · driest 2 mm in 1994	68
March	14.1°C27 Mar 2007	-30.0°C16 Mar 1981	27 mm11 Mar 1989	95 mm1994 · driest 2 mm in 1964	68
April	22.9°C30 Apr 2008	-18.4°C1 Apr 1963	28 mm29 Apr 2015	91 mm1977 · driest 3 mm in 1987	68
May	29.3°C15 May 2018	-7.2°C2 May 1976	31 mm10 May 2004	82 mm1995 · driest 3 mm in 2008	68
June	31.2°C28 Jun 2022	-2.5°C1 Jun 1977	52 mm24 Jun 1988	98 mm2008 · driest 3 mm in 1970	68
July	33.2°C28 Jul 2019	2.0°C15 Jul 1975	59 mm21 Jul 1961	184 mm2005 · driest 4 mm in 1994	68
August	32.2°C7 Aug 2023	-0.6°C27 Aug 1973	52 mm15 Aug 1970	216 mm2014 · driest 9 mm in 2002	66
September	28.0°C5 Sep 2024	-8.0°C30 Sep 1976	34 mm9 Sep 2008	122 mm1997 · driest 4 mm in 1959	67
October	18.6°C7 Oct 1959	-16.8°C31 Oct 1992	39 mm19 Oct 1970	188 mm2006 · driest 10 mm in 2016	67
November	14.1°C12 Nov 2022	-23.5°C27 Nov 1989	36 mm18 Nov 1980	160 mm1996 · driest 9 mm in 1993	67
December	11.0°C20 Dec 2015	-35.5°C31 Dec 1978	34 mm30 Dec 1983	157 mm2011 · driest 6 mm in 2002	67

Typical days per month at KAARINA YLTOINEN, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	27	1
February	0	0	25	<1
March	0	0	25	<1
April	0	0	16	<1
May	1	0	5	<1
June	3	<1	<1	2
July	8	<1	0	2
August	4	<1	<1	3
September	0	0	2	2
October	0	0	9	3
November	0	0	15	2
December	0	0	22	2

How often, not how much — every day in KAARINA YLTOINEN’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%	34%	4%	45%	-6.0–1.6°C
February	0%	28%	2%	32%	-6.0–2.2°C
March	0%	25%	2%	28%	-0.4–4.9°C
April	<1%	23%	2%	26%	5.4–10.9°C
May	16%	21%	3%	23%	13.1–17.6°C
June	39%	25%	5%	29%	17.5–22.4°C
July	54%	30%	7%	37%	19.6–25.0°C
August	41%	33%	9%	45%	18.2–22.7°C
September	7%	32%	5%	40%	12.9–17.5°C
October	0%	33%	7%	44%	7.2–11.3°C
November	0%	39%	6%	53%	1.0–6.4°C
December	0%	37%	4%	51%	-3.4–3.7°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 65-year average. Warmest: 2020. Coolest: 1985.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 641651
NOAA station: FIE00141935 · KAARINA YLTOINEN
Station distance: 4.7 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 60.42°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 34 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 KAARINA YLTOINEN is what differs

Kaarina→Väståboland→Pargas→Paimio→Sauvo→Tarvasjoki→

Or put two places side by side: Piikkiö vs Kaarina

Best time to visitPiikkiö.

July

July

June

The whole year,without the guesswork.

Piikkiö runs +2.0°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Piikkiö.

The whole year,
without the guesswork.

Piikkiö runs +2.0°C
on the 1961–1990 baseline.

Nearby, measured,
and named.