Finland · 1991–2020

Best time to visit
Juornaankylä.

July leads for comfortable weather in Juornaankylä: typically 22.9°C by day, 12.3°C at night, with 64 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high22.9°C

Typical low12.3°C

Rain in July64 mm

Comfort

July

July · August · June

82climate match

Beach

July

July · August · June

47climate match

Outdoors

June

June · August · July

84climate match

The weakest month is January, scoring 5 against July’s 82 — days reach only -1.5°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

5-1.5° / -7.3°

Feb

5-2° / -9.1°

Mar

52.1° / -5.9°

Apr

188.8° / -0.9°

May

4715.4° / 3.6°

Jun

6519.8° / 9.2°

Jul

8222.9° / 12.3°

Aug

7121.2° / 10.7°

Sep

4715.4° / 6.1°

Oct

138.4° / 1.8°

Nov

52.6° / -2.3°

Dec

5-0.7° / -6.2°

Monthly climate evidence for Juornaankylä — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 40 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	-1.5°C	-7.3°C	56 mm	12.1	1.4°C	6 h 30	5	Good coverage
February	-2°C	-9.1°C	44 mm	9.7	0.3°C	8 h 56	5	Good coverage
March	2.1°C	-5.9°C	37 mm	7.5	0.4°C	11 h 32	5	Good coverage
April	8.8°C	-0.9°C	33 mm	6.8	2.0°C	14 h 30	18	Good coverage
May	15.4°C	3.6°C	39 mm	6.9	6.4°C	17 h 14	47	Good coverage
June	19.8°C	9.2°C	71 mm	9.4	11.6°C	19 h 01	65	Good coverage
July	22.9°C	12.3°C	64 mm	8.3	16.3°C	18 h 16	82	Good coverage
August	21.2°C	10.7°C	73 mm	9.9	17.3°C	15 h 43	71	Good coverage
September	15.4°C	6.1°C	57 mm	8.7	14.3°C	12 h 47	47	Good coverage
October	8.4°C	1.8°C	68 mm	10.4	10.1°C	9 h 56	13	Good coverage
November	2.6°C	-2.3°C	71 mm	11.4	6.7°C	7 h 15	5	Good coverage
December	-0.7°C	-6.2°C	54 mm	10.9	3.6°C	5 h 44	5	Good coverage

Records at PORVOO JERNBOLE, 1959–2005
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	7.8°C28 Jan 1992	-38.0°C31 Jan 1967	20 mm26 Jan 1990	113 mm1990 · driest 7 mm in 1996	47
February	9.8°C21 Feb 1990	-38.0°C15 Feb 1979	24 mm23 Feb 1999	106 mm1990 · driest 2 mm in 1994	47
March	15.2°C29 Mar 2002	-33.0°C19 Mar 1963	16 mm21 Mar 1974	72 mm1989 · driest 3 mm in 1964	47
April	24.0°C24 Apr 1995	-22.0°C1 Apr 1963	31 mm27 Apr 1962	111 mm1977 · driest 2 mm in 1987	47
May	29.1°C31 May 1995	-7.3°C6 May 1974	31 mm14 May 1995	73 mm1985 · driest 4 mm in 1993	47
June	30.7°C28 Jun 1972	-2.0°C6 Jun 1962	37 mm11 Jun 1998	142 mm1998 · driest 11 mm in 1964	46
July	32.5°C29 Jul 1994	1.8°C8 Jul 1964	55 mm25 Jul 1960	158 mm2004 · driest 2 mm in 1994	47
August	31.7°C8 Aug 1975	-3.0°C29 Aug 1966	60 mm18 Aug 1991	196 mm1972 · driest 5 mm in 1996	47
September	27.7°C6 Sep 1968	-7.6°C30 Sep 1976	40 mm6 Sep 1990	165 mm1994 · driest 7 mm in 1959	47
October	18.8°C5 Oct 2005	-16.5°C22 Oct 2002	34 mm14 Oct 1992	165 mm1974 · driest 17 mm in 1960	47
November	11.3°C3 Nov 1967	-25.5°C30 Nov 1980	25 mm30 Nov 1961	178 mm1996 · driest 10 mm in 1993	47
December	8.1°C1 Dec 2000	-34.9°C31 Dec 1978	33 mm21 Dec 1984	144 mm1974 · driest 10 mm in 1978	47

Typical days per month at PORVOO JERNBOLE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	28	1
February	0	0	25	<1
March	0	0	26	<1
April	0	0	17	<1
May	<1	0	6	<1
June	3	<1	<1	2
July	9	<1	0	2
August	6	<1	0	2
September	<1	0	4	2
October	0	0	11	2
November	0	0	19	2
December	0	0	25	1

How often, not how much — every day in PORVOO JERNBOLE’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%	3%	46%	-8.2–0.4°C
February	0%	29%	2%	36%	-7.8–1.4°C
March	0%	26%	2%	34%	-1.3–3.5°C
April	<1%	24%	2%	26%	5.2–10.2°C
May	16%	22%	3%	24%	13.1–17.6°C
June	40%	27%	5%	32%	17.5–22.3°C
July	55%	30%	6%	37%	19.7–24.8°C
August	38%	34%	8%	47%	17.8–22.0°C
September	6%	32%	7%	41%	12.6–16.9°C
October	0%	34%	7%	47%	5.9–10.8°C
November	0%	41%	7%	55%	-0.4–5.4°C
December	0%	36%	4%	48%	-4.6–2.0°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 45-year average. Warmest: 2000. Coolest: 1985.2005

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 655393
NOAA station: FIE00142266 · PORVOO JERNBOLE
Station distance: 18.8 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 15 usable years
Daylight: Calculated from latitude 60.57°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 40 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 PORVOO JERNBOLE is what differs

Porvoo→Askola→Monninkylä→Korttia→Tiilää→Ylike→

Or put two places side by side: Juornaankylä vs Porvoo

Best time to visitJuornaankylä.

July

July

June

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Juornaankylä.

The whole year,
without the guesswork.

Nearby, measured,
and named.