Russia · 1991–2020

Best time to visit
Usun.

July leads for comfortable weather in Usun: typically 25.2°C by day, 13°C at night, with 52 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortJuly

Typical high25.2°C

Typical low13°C

Rain in July52 mm

Comfort

July

July · June · August

87climate match

Beach

July

July · June · August

59climate match

Outdoors

August

August · June · July

90climate match

The weakest month is January, scoring 5 against July’s 87 — days reach only -30.7°C, 55° 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

5-30.7° / -38°

Feb

5-25.2° / -34.7°

Mar

5-11° / -25.1°

Apr

52° / -11.3°

May

3212° / 0.4°

Jun

8322.6° / 9.9°

Jul

8725.2° / 13°

Aug

7420.8° / 9.1°

Sep

2810.7° / 1.3°

Oct

5-3.2° / -10.4°

Nov

5-21.2° / -28.6°

Dec

5-31° / -37.9°

Monthly climate evidence for Usun — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-30.7°C	-38°C	13 mm	4.8	5 h 08	5	Strong coverage
February	-25.2°C	-34.7°C	11 mm	3.4	8 h 19	5	Strong coverage
March	-11°C	-25.1°C	10 mm	3.5	11 h 26	5	Strong coverage
April	2°C	-11.3°C	11 mm	3.3	14 h 58	5	Strong coverage
May	12°C	0.4°C	26 mm	5.2	18 h 27	32	Strong coverage
June	22.6°C	9.9°C	35 mm	6.8	21 h 21	83	Strong coverage
July	25.2°C	13°C	52 mm	6.8	19 h 59	87	Strong coverage
August	20.8°C	9.1°C	43 mm	6.8	16 h 28	74	Strong coverage
September	10.7°C	1.3°C	33 mm	7.3	12 h 55	28	Strong coverage
October	-3.2°C	-10.4°C	25 mm	8	9 h 32	5	Strong coverage
November	-21.2°C	-28.6°C	19 mm	6.4	6 h 11	5	Strong coverage
December	-31°C	-37.9°C	14 mm	5.6	3 h 59	5	Strong coverage

What has changed

Usun runs +2.1°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

+3.1

Feb

+2.2

Mar

+3.1

Apr

+3.4

May

+2.2

Jun

+3.2

Jul

+1.2

Aug

+1.2

Sep

+0.6

Oct

+2.0

Nov

+2.9

Dec

+0.1

July daytime highs, 2011–2025. Last recorded: 25.1°C.

Records at VILJUJSK, 1898–2025
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	-0.4°C1 Jan 1979	-60.9°C13 Jan 1927	6 mm3 Jan 2021	24 mm2002 · driest 2 mm in 1902	125
February	-2.0°C27 Feb 1998	-58.0°C2 Feb 1931	8 mm17 Feb 1998	31 mm2002 · driest 0 mm in 1923	128
March	10.1°C27 Mar 2011	-50.0°C7 Mar 1912	8 mm29 Mar 1961	26 mm2020 · driest 1 mm in 1916	127
April	18.6°C30 Apr 1943	-40.2°C6 Apr 1951	17 mm15 Apr 1987	32 mm1940 · driest 0 mm in 1905	127
May	30.4°C26 May 2020	-23.0°C1 May 1909	27 mm23 May 1926	64 mm1926 · driest 0 mm in 1960	126
June	36.1°C18 Jun 1956	-5.3°C1 Jun 1964	99 mm16 Jun 2022	141 mm2022 · driest 1 mm in 1939	126
July	37.4°C15 Jul 1980	0.0°C6 Jul 1900	52 mm16 Jul 1983	128 mm2018 · driest 0 mm in 1984	126
August	36.0°C5 Aug 1969	-6.3°C31 Aug 1898	71 mm13 Aug 1916	135 mm1961 · driest 2 mm in 1914	126
September	27.7°C5 Sep 1955	-15.4°C25 Sep 1957	34 mm5 Sep 1997	95 mm1997 · driest 0 mm in 1909	124
October	18.0°C3 Oct 1943	-39.8°C31 Oct 1971	17 mm5 Oct 1979	48 mm2011 · driest 4 mm in 1931	124
November	3.7°C1 Nov 2013	-52.7°C30 Nov 1968	11 mm4 Nov 1978	39 mm2001 · driest 2 mm in 1936	123
December	-2.1°C11 Dec 2003	-57.9°C31 Dec 1911	8 mm29 Dec 1995	31 mm1930 · driest 3 mm in 2000	125

Typical days per month at VILJUJSK, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	31	0
February	0	0	28	0
March	0	0	30	0
April	0	0	28	0
May	<1	0	15	<1
June	11	3	<1	<1
July	16	6	0	2
August	7	<1	<1	1
September	<1	0	11	<1
October	0	0	29	0
November	0	0	29	0
December	0	0	30	0

The best month has moved. On the 1961–1990 numbers the strongest month here was July (scoring 92); on 2011–2025 it is June (91). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in VILJUJSK’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%	12%	0%	8%	-43.2–-26.5°C
February	0%	10%	0%	5%	-32.4–-20.8°C
March	0%	9%	0%	4%	-15.6–-7.5°C
April	0%	11%	<1%	6%	-3.1–3.9°C
May	9%	15%	1%	12%	7.8–13.9°C
June	51%	22%	3%	22%	18.4–24.4°C
July	67%	21%	4%	20%	22.2–27.2°C
August	47%	20%	3%	19%	18.4–22.5°C
September	6%	21%	1%	22%	8.4–13.5°C
October	0%	23%	<1%	24%	-7.1–0.0°C
November	0%	19%	<1%	17%	-26.9–-16.9°C
December	0%	15%	0%	12%	-37.9–-25.9°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.

1931Each stripe is one year’s mean temperature against the 84-year average. Warmest: 2020. Coolest: 1958.2020

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 2013830
NOAA station: RSM00024641 · VILJUJSK
Station distance: 86.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 64.52°, 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 VILJUJSK is what differs

Vilyuysk→Verkhnevilyuysk→Kysyl-Syr→Yuryan→Yunekit→Vatulinskaya→

Or put two places side by side: Usun vs Vilyuysk

Best time to visitUsun.

July

July

August

The whole year,without the guesswork.

Usun runs +2.1°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Usun.

The whole year,
without the guesswork.

Usun runs +2.1°C
on the 1961–1990 baseline.

Nearby, measured,
and named.