Arsen’yev weather in September

In September, Arsen’yev sees average daytime highs of 20°C and overnight lows near 9°C, with 85 mm of precipitation across 9.6 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 18°C by the end. The sky is clear or mostly clear about 37% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 06 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Arsen’yev's 6th-clearest and 8th-windiest month. For the whole year in context, see Arsen’yev's year-round climate.

Daytime high
20°
4th warmest
Overnight low
9th coldest
Precipitation
85 mm
9.6 wet days
Daylight
12 h 18 min
6:52 AM – 7:10 PM
Cloud cover
54%
6th clearest
Wind
8 km/h
8th windiest
Solar energy
4.1 kWh/m²
Travel score
6.4
out of 10

Arsen’yev is city in Primorsky Krai, Russia.

Density
647/km²
people per km²
Founded
1902

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 23°C in the first days to 18°C by the end.

A typical September day in Arsen’yev reaches about 20°C in the afternoon and slips back to 9°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 24°C. Set against its neighbours, September runs about 5°C cooler than August and about 8°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12313
22313
32313
42313
52212
62212
72212
82211
92211
102111
112111
122110
132110
142110
15209
16209
17209
18208
19208
20198
21198
22197
23197
24197
25187
26186
27186
28186
29186
30175

How September really feels in Arsen’yev

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.

Arsen’yev weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-11° / -24°112.83.79.10.0
Feb-6° / -20°143.34.110.20.0
Mar / -11°306.35.611.60.1
Apr12° / 519.43.113.23.1
May18° / 8512.60.114.55.4
Jun22° / 13°9112.7015.26.1
Jul25° / 17°13113.70156.0
Aug25° / 16°13013.6013.86.1
Sep20° / 859.60.112.36.4
Oct12° / 649.41.510.83.6
Nov / -9°355.84.49.40.1
Dec-9° / -21°193.94.58.70.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 46%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14159
24258
34258
44357
54456
64555
74654
84852
94852
105050
115149
125248
135446
145545
155644
165842
175842
186040
196040
206040
216040
226040
236040
246040
256040
266040
276040
286040
296040
306040

Chance of precipitation in September

Any precipitation

Arsen’yev gets around 85 mm of rain and snow over 9.6 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 33% and peaks near 38% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202530
Rain chance (%)
138
238
337
437
536
635
735
834
934
1033
1133
1232
1332
1431
1531
1631
1730
1830
1930
2030
2131
2231
2331
2431
2532
2632
2732
2832
2932
3032

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 70% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13033298
23333267
33633247
43933226
54233195
64533175
74833154
85133133
95333113
10573292
11603172
12642961
13662851
14692641
15722431
16762220
17782020
18811810
19831610
20851410
21871210
22891010
2391810
2493700
2595500
2696400
2797300
2897300
2998200
3098200

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 06 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 90 minutes over September. Sunrise moves from 6:34 AM to 7:09 AM, and sunset from 7:39 PM to 6:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.16:347:39
213.06:367:37
313.06:377:35
412.96:387:33
512.96:397:31
612.86:407:29
712.86:427:28
812.76:437:26
912.76:447:24
1012.66:457:22
1112.66:467:20
1212.56:477:18
1312.56:497:16
1412.46:507:14
1512.46:517:12
1612.36:527:10
1712.26:537:08
1812.26:557:06
1912.16:567:04
2012.16:577:02
2112.06:587:01
2212.06:596:59
2311.97:016:57
2411.97:026:55
2511.87:036:53
2611.87:046:51
2711.77:056:49
2811.77:076:47
2911.67:086:45
3011.67:096:43

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.1 kWh/m².

For context, solar energy here swings from a low near 1.82 kWh/m² to a high of 5.5 kWh/m² in June across the year — September's 4.1 kWh/m² falls in the middle.

012345151015202530
Solar energy (kWh/m²)Level
14.2Bright
24.2Bright
34.2Bright
44.2Bright
54.2Bright
64.2Bright
74.2Bright
84.2Bright
94.2Bright
104.2Bright
114.2Bright
124.2Bright
134.2Bright
144.1Bright
154.1Bright
164.1Bright
174.1Bright
184.1Bright
194.1Bright
204.0Bright
214.0Bright
224.0Moderate
234.0Moderate
243.9Moderate
253.9Moderate
263.9Moderate
273.8Moderate
283.8Moderate
293.8Moderate
303.7Moderate
Planning a trip in September

Hazard calendar for Arsen’yev

In seasonPeak

In September, Arsen’yev sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Arsen’yev's rainy season runs May–October, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Arsen’yev?

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

6.4
Sightseeing
1st-best month of the year
3.5
Beach & pool
4th-best month of the year

September is a reasonable time to visit Arsen’yev for sightseeing.

What to pack for Arsen’yev in September

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

In September, Arsen’yev sees daytime highs around 20°C and nights near 9°C. Worth packing: rain gear. About 10 days see rain.

rain gear

UV index in Arsen’yev in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Arsen’yev peaks around August 17 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highModerateLowAug 17UV 8Dec 20UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr5High
May7High
Jun7High
Jul5High
Aug9Very high
Sep6High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Arsen’yev 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 Arsen’yev is worst in April — around 30 µg/m³ PM2.5 (moderate), about 4.9× the cleanest month (September, 6 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodModerateApr 1229 µg/m³Sep 106 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb17Moderate
Mar25Moderate
Apr30Moderate
May16Moderate
Jun11Good
Jul10Good
Aug7Good
Sep6Good
Oct11Good
Nov14Moderate
Dec11Good
Location & terrain

Where is Arsen’yev?

Arsen’yev sits at 44.2°N, 133.3°E, 172 m above sea level, in Russia. The nearest listed city is Spassk-Dal’niy, 61 km away.

Topography around Arsen’yev

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

Within 3 km, the terrain around Arsen’yev has only modest variations in elevation — a maximum elevation change of 128 m around an average of 179 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 809 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,512 m.

The land around Arsen’yev is covered by artificial surfaces (35%), trees (27%) and cropland (21%) within 3 km, trees (57%) and cropland (24%) within 16 km, and trees (81%) within 80 km.

3 km
128 m
16 km
809 m
80 km
1,512 m
treesgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Spassk-Dal’niy 61 km · Ussuriysk 112 km · Partizansk 116 km · Artëm 124 km · Trudovoye 135 km · Bol'šoj Kamen' 138 km · Kavalerovo 142 km · Lesozavodsk 147 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 Arsen’yev (44.157°, 133.2733°, elevation 172 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. 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).