Finland · 1991–2020

Best time to visit
Viranoja.

July leads for comfortable weather in Viranoja: typically 22.7°C by day, 13.2°C at night, with 70 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high22.7°C

Typical low13.2°C

Rain in July70 mm

Comfort

July

July · August · June

81climate match

Beach

July

July · August · June

46climate match

Outdoors

June

June · August · May

85climate match

The weakest month is January, scoring 5 against July’s 81 — days reach only -2.9°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

5-2.9° / -7.8°

Feb

5-2.5° / -7.9°

Mar

51.8° / -5.6°

Apr

199° / -0.2°

May

5216.1° / 5.3°

Jun

6619.8° / 9.6°

Jul

8122.7° / 13.2°

Aug

7120.7° / 11.9°

Sep

4815.1° / 7.7°

Oct

117.9° / 2.6°

Nov

53.1° / -0.8°

Dec

5-0.2° / -4.6°

Monthly climate evidence for Viranoja — daylight is calculated from latitude, everything else is measured, sea temperature from the nearest open water 44 km away
Month	Day	Night	Rain	Wet days	Sea	Daylight	Comfort	Coverage
January	-2.9°C	-7.8°C	55 mm	11.9	2.1°C	6 h 31	5	Good coverage
February	-2.5°C	-7.9°C	44 mm	9.3	0.8°C	8 h 56	5	Good coverage
March	1.8°C	-5.6°C	32 mm	7.8	0.7°C	11 h 32	5	Good coverage
April	9°C	-0.2°C	34 mm	7.1	2.2°C	14 h 29	19	Good coverage
May	16.1°C	5.3°C	39 mm	7.5	6.2°C	17 h 13	52	Good coverage
June	19.8°C	9.6°C	69 mm	9.7	11.4°C	19 h 00	66	Good coverage
July	22.7°C	13.2°C	70 mm	9.6	16.1°C	18 h 15	81	Good coverage
August	20.7°C	11.9°C	75 mm	10.7	17.2°C	15 h 43	71	Good coverage
September	15.1°C	7.7°C	61 mm	9.4	14.4°C	12 h 46	48	Good coverage
October	7.9°C	2.6°C	75 mm	11.3	10.3°C	9 h 57	11	Good coverage
November	3.1°C	-0.8°C	65 mm	12	7.0°C	7 h 16	5	Good coverage
December	-0.2°C	-4.6°C	60 mm	12.8	4.3°C	5 h 45	5	Good coverage

Records at NURMIJARVI GEOFYSIIKAN OBSERVA, 1999–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	7.8°C10 Jan 2007	-29.1°C7 Jan 2003	28 mm31 Jan 2004	111 mm2005 · driest 12 mm in 2026	26
February	7.4°C15 Feb 2019	-27.9°C20 Feb 2011	29 mm16 Feb 2020	99 mm2022 · driest 6 mm in 2003	26
March	15.6°C27 Mar 2007	-23.0°C14 Mar 2013	20 mm30 Mar 2015	69 mm2019 · driest 7 mm in 2005	26
April	24.1°C24 Apr 2000	-11.3°C1 Apr 2003	25 mm2 Apr 2024	73 mm2024 · driest 5 mm in 2019	27
May	29.9°C25 May 2014	-3.6°C4 May 2019	35 mm5 May 2002	78 mm2010 · driest 5 mm in 2024	27
June	31.8°C21 Jun 2021	1.4°C6 Jun 2010	39 mm30 Jun 2004	128 mm2008 · driest 7 mm in 2023	27
July	33.6°C28 Jul 2010	4.2°C6 Jul 2009	38 mm13 Jul 2001	203 mm2004 · driest 7 mm in 2003	26
August	32.0°C8 Aug 2010	2.5°C30 Aug 2007	45 mm28 Aug 2023	190 mm2021 · driest 34 mm in 2022	26
September	26.2°C4 Sep 2024	-2.4°C30 Sep 2001	43 mm23 Sep 2012	145 mm2012 · driest 15 mm in 2000	27
October	16.8°C1 Oct 2000	-11.8°C22 Oct 2002	48 mm4 Oct 2006	194 mm2006 · driest 15 mm in 2016	27
November	12.5°C12 Nov 2022	-19.2°C30 Nov 2010	47 mm5 Nov 2000	112 mm2013 · driest 27 mm in 2018	26
December	10.1°C20 Dec 2015	-26.8°C31 Dec 2002	21 mm12 Dec 1999	138 mm2011 · driest 8 mm in 2002	26

Typical days per month at NURMIJARVI GEOFYSIIKAN OBSERVA, 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	15	<1
May	1	0	3	1
June	4	<1	0	2
July	9	1	0	2
August	4	<1	0	3
September	0	0	<1	2
October	0	0	9	2
November	0	0	16	1
December	0	0	24	<1

How often, not how much — every day in NURMIJARVI GEOFYSIIKAN OBSERVA’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%	2%	49%	-7.1–-0.3°C
February	0%	30%	3%	37%	-6.8–1.4°C
March	0%	27%	1%	32%	-1.5–5.0°C
April	1%	25%	3%	28%	6.9–10.7°C
May	20%	23%	3%	25%	14.3–18.7°C
June	41%	29%	7%	38%	17.9–22.8°C
July	59%	32%	7%	41%	20.0–25.3°C
August	41%	35%	8%	46%	19.1–22.8°C
September	8%	33%	6%	41%	13.5–17.1°C
October	0%	36%	7%	49%	6.0–10.0°C
November	0%	42%	5%	59%	0.6–5.2°C
December	0%	41%	3%	55%	-5.5–2.9°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.

2000Each stripe is one year’s mean temperature against the 24-year average. Warmest: 2020. Coolest: 2010.2023

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 631419
NOAA station: FIE00142846 · NURMIJARVI GEOFYSIIKAN OBSERVA
Station distance: 4.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 21 usable years
Daylight: Calculated from latitude 60.52°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Sea temperature: NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 44 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 NURMIJARVI GEOFYSIIKAN OBSERVA is what differs

Nurmijärvi→Nurmijärven kirkonkylä→Röykkä→Vihtijärvi→Valkjärvi→Uusikylä→

Or put two places side by side: Viranoja vs Nurmijärvi

Best time to visitViranoja.

July

July

June

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Viranoja.

The whole year,
without the guesswork.

Nearby, measured,
and named.