Yuzhno-Sakhalinsk climate

Name: Yuzhno-Sakhalinsk
Address: RU

Yuzhno-Sakhalinsk is warmest in August, with average highs of 22 °C, and coldest in January, when nights average -15 °C. September is the wettest month (104 mm) and February the driest (40 mm). Figures are 1991–2020 climate normals.

Across a full year Yuzhno-Sakhalinsk averages 877 mm of rain, 11 days above 25 °C and 171 days below freezing.

Russia · population 198,973 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month August 22 °C
Coldest month January -15 °C
Driest month February 40 mm
Wettest month September 104 mm
Least cloud October 55 % cloud
Hottest on record August 31 °C
Coldest on record January -26 °C

What to expectYuzhno-Sakhalinsk through the year

Yuzhno-Sakhalinsk has a clear annual cycle: average daily highs run from -7.9 °C in January to 22 °C in August, a swing of 29 °C in mean temperature across the year.

Counted across a normal year, 11 days a year reach 25 °C, 0 of them reach 30 °C, 171 nights drop below freezing. The warmest reading in the 1991–2020 record is 31 °C, in August.

Rain is strongly seasonal. September averages 104 mm against 40 mm in February — 2.6 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	-7.9 °C	55 mm	68 %
February	-6.8 °C	40 mm	63 %
March	-1.2 °C	64 mm	63 %
April	5.8 °C	70 mm	65 %
May	12.4 °C	70 mm	70 %
June	16.9 °C	62 mm	75 %
July	20.5 °C	84 mm	81 %
August	21.6 °C	100 mm	75 %
September	18.2 °C	104 mm	62 %
October	11.2 °C	90 mm	55 %
November	2.4 °C	72 mm	62 %
December	-5.0 °C	67 mm	68 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days below 0 °C
January	-7.9 °C	-14.9 °C	-11.4 °C	2.4 °C	-26.1 °C	0	31
February	-6.8 °C	-14.2 °C	-10.6 °C	5.1 °C	-25.4 °C	0	28
March	-1.2 °C	-8.4 °C	-4.9 °C	10.4 °C	-21.9 °C	0	30
April	5.8 °C	-1.7 °C	1.8 °C	19.6 °C	-14.3 °C	0	21
May	12.4 °C	4.0 °C	7.9 °C	29.4 °C	-7.8 °C	0	3
June	16.9 °C	9.3 °C	12.8 °C	29.1 °C	0.8 °C	1	0
July	20.5 °C	13.6 °C	16.7 °C	30.0 °C	6.7 °C	4	0
August	21.6 °C	15.0 °C	18.0 °C	30.6 °C	7.9 °C	6	0
September	18.2 °C	11.1 °C	14.4 °C	26.5 °C	1.9 °C	1	0
October	11.2 °C	4.2 °C	7.5 °C	22.0 °C	-5.6 °C	0	4
November	2.4 °C	-3.9 °C	-0.9 °C	14.5 °C	-20.1 °C	0	24
December	-5.0 °C	-12.2 °C	-8.5 °C	5.8 °C	-24.0 °C	0	31

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	55 mm	8	8.9 h/day	68 %	80 %	16 km/h
February	40 mm	6	10 h/day	63 %	78 %	16 km/h
March	64 mm	9	12 h/day	63 %	78 %	18 km/h
April	70 mm	10	14 h/day	65 %	79 %	18 km/h
May	70 mm	11	15 h/day	70 %	80 %	17 km/h
June	62 mm	9	16 h/day	75 %	84 %	14 km/h
July	84 mm	9	16 h/day	81 %	86 %	13 km/h
August	100 mm	11	14 h/day	75 %	86 %	14 km/h
September	104 mm	12	13 h/day	62 %	83 %	17 km/h
October	90 mm	12	11 h/day	55 %	79 %	19 km/h
November	72 mm	9	9.4 h/day	62 %	77 %	19 km/h
December	67 mm	9	8.5 h/day	68 %	79 %	17 km/h

How Yuzhno-Sakhalinsk compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Yuzhno-Sakhalinsk	22 °C	-15 °C	877 mm	11
Asahikawa · Japan	24 °C	-12 °C	1,212 mm	30
Sapporo · Japan	24 °C	-9.4 °C	1,162 mm	25
Kushiro · Japan	20 °C	-8.8 °C	1,133 mm	1
Komsomolsk-on-Amur · Russia	24 °C	-26 °C	640 mm	31

Where Yuzhno-Sakhalinsk ranks

Ranking	Position	Value
The coolest places in Europe in April	17th of 50	5.8 °C
The coolest places in Europe in May	20th of 50	12 °C
The coolest places in the world in April	22nd of 50	5.8 °C
The coolest places in Europe in June	26th of 50	17 °C
The coolest places in the world in May	29th of 50	12 °C
The coolest places in Europe in March	35th of 50	-1.2 °C

Planning a trip? See the best time to visit Yuzhno-Sakhalinsk.

QuestionsCommon questions about Yuzhno-Sakhalinsk’s climate

When is the best time to visit Yuzhno-Sakhalinsk?

That depends on what you want, so the honest answer is a comparison rather than a single month. July, August, September sit closest to 20 °C on average, August is the warmest month and February the driest. The month-by-month table above has the full picture.

How hot does Yuzhno-Sakhalinsk get?

In August, the warmest month, daily highs average 22 °C. About 0 days a year pass 30 °C. The highest value in the 1991–2020 record is 31 °C.

How cold does it get in winter?

Nights average -15 °C in January, the coldest month. A normal year has 171 nights below freezing.

Which month is wettest in Yuzhno-Sakhalinsk?

September, averaging 104 mm over 12 days with rain. The driest month is February with 40 mm. The year as a whole averages 877 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Yuzhno-Sakhalinsk rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: 46.954°, 142.736° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.