Okha weather in September

In September, Okha sees average daytime highs of 13°C and overnight lows near 10°C, with 76 mm of rain across 10.8 wet days and about 12.5 hours of daylight. It is the 3rd-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 16°C in the first days to 11°C by the end. The sky is clear or mostly clear about 29% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 30 min at the start of September to 11 h 24 min by month's end. Set against the rest of the year, September is Okha's 1st-clearest and 7th-windiest month. For the whole year in context, see Okha's year-round climate.

Daytime high
13°
3rd warmest
Overnight low
10°
10th coldest
Rainfall
76 mm
10.8 wet days
Daylight
12 h 24 min
6:10 AM – 6:35 PM
Cloud cover
61%
1st clearest
Wind
19 km/h
7th windiest
Solar energy
3.34 kWh/m²
Travel score
3.7
out of 10

Okha is human settlement in Okhinsky District, Sakhalin Oblast, Russia.

Density
604/km²
people per km²
Founded
1880

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 16°C in the first days to 11°C by the end.

A typical September day in Okha reaches about 13°C in the afternoon and slips back to 10°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 10°C and 17°C. Set against its neighbours, September runs about 3°C cooler than August and about 7°C warmer than October.

10°15°20°151015202530
Avg high (°C)Avg low (°C)
11612
21612
31612
41512
51512
61511
71511
81511
91511
101511
111411
121410
131410
141410
151410
161310
17139
18139
19139
20139
21129
22128
23128
24128
25118
26118
27117
28117
29117
30107

How September really feels in Okha

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Okha weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-14° / -18°387.39.37.80.0
Feb-14° / -19°224.66.49.40.0
Mar-8° / -14°366.57.911.50.0
Apr-1° / -6°407.88.213.70.0
May / 538.83.715.60.3
Jun10° / 518.2016.72.5
Jul15° / 11°627.6016.34.6
Aug16° / 12°8410.5014.65.0
Sep13° / 10°7610.8012.53.7
Oct / 8713.53.810.30.7
Nov-2° / -5°8316.216.98.30.0
Dec-10° / -14°5310.313.67.30.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 56%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13961
23961
33961
44060
54060
64159
74159
84357
94357
104357
114357
124357
134456
144555
154555
164555
174555
184753
194654
204654
214753
224654
234654
244555
254654
264555
274555
284456
294456
304456

Chance of precipitation in September

Any precipitation

Okha gets around 76 mm of rain over 10.8 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 36% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
136
236
336
436
536
636
736
835
935
1035
1135
1235
1335
1436
1536
1636
1736
1836
1936
2037
2137
2237
2337
2438
2538
2638
2738
2838
2938
3038

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 94% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
180182
281172
382162
483152
584142
685132
787121
888111
989101
109091
119280
129370
139460
149550
159640
169730
179820
189820
199910
209910
219910
2210000
2310000
2410000
2510000
2610000
2710000
2810000
2910000
3010000

Wind in September

Winds average 19 km/h in September.

Across September, daily wind ranges from about 18 km/h on the calmest days to 20 km/h at its breeziest. It stays fairly steady from day to day.

0510152025151015202530
Wind speed (km/h)Feels
118light breeze
218light breeze
318light breeze
418light breeze
518light breeze
618light breeze
718light breeze
819light breeze
919light breeze
1019light breeze
1119light breeze
1219light breeze
1319light breeze
1419light breeze
1519light breeze
1619light breeze
1719light breeze
1819light breeze
1919light breeze
2019light breeze
2119light breeze
2219light breeze
2320light breeze
2420light breeze
2520light breeze
2620light breeze
2720light breeze
2820breezy
2920breezy
3020breezy

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 30 min at the start of September to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 126 minutes over September. Sunrise moves from 5:43 AM to 6:36 AM, and sunset from 7:13 PM to 5:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.55:437:13
213.45:457:10
313.45:467:08
413.35:487:06
513.25:507:03
613.15:527:00
713.15:546:58
813.05:556:55
912.95:576:53
1012.95:596:50
1112.86:016:48
1212.76:036:45
1312.66:056:43
1412.66:066:40
1512.56:086:38
1612.46:106:35
1712.36:126:33
1812.36:146:30
1912.26:156:27
2012.16:176:25
2112.16:196:22
2212.06:216:20
2311.96:236:17
2411.86:246:15
2511.86:266:12
2611.76:286:10
2711.66:306:07
2811.56:326:05
2911.56:346:02
3011.46:365:59

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.34 kWh/m².

For context, solar energy here swings from a low near 0.68 kWh/m² to a high of 5.72 kWh/m² in May across the year — September's 3.34 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.9Moderate
23.8Moderate
33.8Moderate
43.8Moderate
53.7Moderate
63.7Moderate
73.7Moderate
83.6Moderate
93.6Moderate
103.6Moderate
113.5Moderate
123.5Moderate
133.5Moderate
143.4Moderate
153.4Moderate
163.4Moderate
173.3Moderate
183.3Moderate
193.2Moderate
203.2Moderate
213.1Moderate
223.1Moderate
233.0Moderate
243.0Moderate
253.0Moderate
262.9Moderate
272.9Moderate
282.8Moderate
292.8Moderate
302.7Moderate
Planning a trip in September

Is September a good time to visit Okha?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

3.7
Sightseeing
3rd-best month of the year
Beach & pool
never really warm enough

September is a weaker month for outdoor sightseeing in Okha.

What to pack for Okha in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Okha sees daytime highs around 13°C and nights near 10°C. Worth packing: a warm layer and rain gear. About 11 days see rain.

a warm layerrain gear

Sea temperature near Okha in September

The nearest coast averages about 11°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 13°C and coldest in March near -1°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

-5°0°5°10°15°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan-1Bracing
Feb-1Bracing
Mar-1Bracing
Apr-1Bracing
May0Bracing
Jun5Bracing
Jul11Bracing
Aug13Bracing
Sep11Bracing
Oct7Bracing
Nov3Bracing
Dec0Bracing

UV index in Okha in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Okha peaks around August 10 at about 5 (high) — a little sun protection helps at midday. It bottoms out near December 18 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowAug 10UV 5Dec 18UV 0
UV index (midday)Level
Jan1Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun5High
Jul5High
Aug5High
Sep3Moderate
Oct2Low
Nov1Low
Dec0Low

Air quality in Okha in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Okha is worst in September — around 21 µg/m³ PM2.5 (moderate), about 7.9× the cleanest month (January, 3 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1519 µg/m³Jan 153 µg/m³
PM2.5 (µg/m³)Level
Jan3Good
Feb4Good
Mar11Good
Apr12Good
May9Good
Jun7Good
Jul10Good
Aug12Moderate
Sep21Moderate
Oct9Good
Nov5Good
Dec4Good
Location & terrain

Where is Okha?

Okha sits at 53.6°N, 143.0°E, 25 m above sea level, in Russia. The nearest listed city is Nikolayevsk-on-Amure, 156 km away.

VaninoSovetskaya Gavan’KholmskYuzhno-Sakhalinsk

Topography around Okha

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Okha.

Within 3 km, the terrain around Okha has only modest variations in elevation — a maximum elevation change of 78 m around an average of 24 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 103 m; within 80 km, significant variations in elevation — a maximum elevation change of 585 m.

The land around Okha is covered by trees (48%) and grassland (29%) within 3 km, trees (49%) and water (37%) within 16 km, and water (53%) and trees (36%) within 80 km.

3 km
78 m
16 km
103 m
80 km
585 m
treesshrubsgrasslandartificial surfacesbare terrainwaterwetland
September weather nearby: Nikolayevsk-on-Amure 156 km · Poronaysk 487 km · Komsomolsk-on-Amur 528 km · Vanino 534 km · Sovetskaya Gavan’ 546 km · Amursk 559 km · Kholmsk 731 km · Yuzhno-Sakhalinsk 739 km

Russia travel facts

Travel advisory
Level 4
Do Not Travel
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 32% of US
price level, 2025
GDP per capita
$17,547
2025
Happiness
5.8 / 10
World Happiness, 2025
Safe drinking water
76%
of population, 2024
Homicide rate
6.8
per 100k, 2021
Road deaths
12
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 521
Religion
other Christian 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Okha (53.5949°, 142.9528°, elevation 25 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).