Sosnovyy Bor weather in September

In September, Sosnovyy Bor sees average daytime highs of 14°C and overnight lows near 12°C, with 80 mm of rain across 13.2 wet days and about 12.6 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 16°C in the first days to 12°C by the end. The sky is clear or mostly clear about 18% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 54 min at the start of September to 11 h 12 min by month's end. Set against the rest of the year, September is Sosnovyy Bor's 6th-clearest and 6th-windiest month. For the whole year in context, see Sosnovyy Bor's year-round climate.

Daytime high
14°
3rd warmest
Overnight low
12°
10th coldest
Rainfall
80 mm
13.2 wet days
Daylight
12 h 30 min
6:42 AM – 7:14 PM
Cloud cover
67%
6th clearest
Wind
22 km/h
6th windiest
Solar energy
2.61 kWh/m²
Travel score
3.6
out of 10

Sosnovyy Bor is city in Leningrad Oblast, Russia.

Density
952/km²
people per km²
Founded
1958

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 12°C by the end.

A typical September day in Sosnovyy Bor reaches about 14°C in the afternoon and slips back to 12°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 16°C. Set against its neighbours, September runs about 4°C cooler than August and about 6°C warmer than October.

10°15°20°151015202530
Avg high (°C)Avg low (°C)
11614
21614
31613
41613
51513
61513
71513
81513
91513
101512
111512
121412
131412
141412
151412
161411
171411
181311
191311
201311
211311
221310
231310
241210
251210
261210
271210
281210
29119
30119

How September really feels in Sosnovyy Bor

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.

Sosnovyy Bor weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-2° / -6°4411.711.86.40.0
Feb-3° / -7°359.59.58.70.0
Mar-1° / -4°369.16.411.30.0
Apr / 368.72.914.10.1
May / 447.80.216.72.0
Jun13° / 10°599.8018.33.6
Jul18° / 15°569.3017.75.9
Aug18° / 15°8511.9015.35.5
Sep14° / 12°8013.2012.63.6
Oct / 8415.11.49.81.0
Nov / 6914.45.77.20.0
Dec-0° / -3°56139.95.70.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 63%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13961
24060
34060
43961
53961
64060
74060
84060
94060
104060
114060
124060
133961
143961
153862
163961
173862
183763
193763
203664
213565
223565
233565
243466
253367
263367
273367
283268
293169
303070

Chance of precipitation in September

Any precipitation

Sosnovyy Bor gets around 80 mm of rain over 13.2 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 44% and peaks near 48% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
140
240
340
440
540
641
741
842
942
1043
1143
1244
1344
1445
1545
1645
1745
1845
1945
2045
2145
2246
2346
2446
2546
2647
2747
2847
2947
3048

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 89% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
167312
269292
371272
474251
576231
677221
779201
881181
983161
1085141
1186131
1288111
1389101
149190
159370
169460
179550
189640
199730
209730
219820
229820
239910
249910
259910
269910
279910
2810000
2910000
3010000

Wind in September

Winds average 22 km/h in September.

Across September, daily wind ranges from about 20 km/h on the calmest days to 24 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202530
Wind speed (km/h)Feels
120breezy
220breezy
320breezy
421breezy
521breezy
621breezy
721breezy
821breezy
921breezy
1022breezy
1122breezy
1222breezy
1322breezy
1422breezy
1522breezy
1623breezy
1723breezy
1823breezy
1923breezy
2023breezy
2123breezy
2223breezy
2323breezy
2423breezy
2523breezy
2623breezy
2724breezy
2824breezy
2924breezy
3024breezy

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 54 min at the start of September to 11 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 162 minutes over September. Sunrise moves from 6:06 AM to 7:16 AM, and sunset from 8:01 PM to 6:30 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.96:068:01
213.86:087:58
313.76:117:55
413.66:137:52
513.66:157:49
613.56:187:45
713.46:207:42
813.36:237:39
913.26:257:36
1013.16:287:33
1113.06:307:30
1212.96:327:27
1312.86:357:23
1412.76:377:20
1512.66:407:17
1612.56:427:14
1712.46:447:11
1812.36:477:08
1912.36:497:05
2012.26:527:01
2112.16:546:58
2212.06:566:55
2311.96:596:52
2411.87:016:49
2511.77:046:46
2611.67:066:42
2711.57:096:39
2811.47:116:36
2911.37:136:33
3011.27:166:30

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.61 kWh/m².

For context, solar energy here swings from a low near 0.16 kWh/m² to a high of 5.93 kWh/m² in June across the year — September's 2.61 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.4Moderate
23.4Moderate
33.3Moderate
43.3Moderate
53.2Moderate
63.1Moderate
73.1Moderate
83.0Moderate
93.0Moderate
102.9Moderate
112.9Moderate
122.8Moderate
132.7Moderate
142.7Moderate
152.6Moderate
162.6Moderate
172.5Moderate
182.5Moderate
192.4Moderate
202.4Moderate
212.3Moderate
222.3Moderate
232.2Moderate
242.1Moderate
252.1Moderate
262.0Moderate
272.0Dim
281.9Dim
291.9Dim
301.8Dim
Planning a trip in September

Is September a good time to visit Sosnovyy Bor?

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

3.6
Sightseeing
3rd-best month of the year
0.1
Beach & pool
3rd-best month of the year

September is a weaker month for outdoor sightseeing in Sosnovyy Bor.

What to pack for Sosnovyy Bor in September

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

In September, Sosnovyy Bor sees daytime highs around 14°C and nights near 12°C. Worth packing: a warm layer, rain gear and a windbreaker. About 13 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Sosnovyy Bor in September

The nearest coast averages about 15°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 18°C and coldest in February near -0°C.

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

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan1Bracing
Feb0Bracing
Mar0Bracing
Apr2Bracing
May7Bracing
Jun13Bracing
Jul17Cool
Aug18Cool
Sep15Bracing
Oct10Bracing
Nov6Bracing
Dec3Bracing

UV index in Sosnovyy Bor in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sosnovyy Bor peaks around July 11 at about 5 (high) — a little sun protection helps at midday. It bottoms out near December 17 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 4 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJul 11UV 5Dec 17UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun5High
Jul5High
Aug4Moderate
Sep2Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Sosnovyy Bor?

Sosnovyy Bor sits at 59.9°N, 29.1°E, 17 m above sea level, in Russia. The nearest listed city is Lomonosov, 38 km away.

Topography around Sosnovyy Bor

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

Within 3 km, the terrain around Sosnovyy Bor has only modest variations in elevation — a maximum elevation change of 36 m around an average of 14 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 99 m; within 80 km, only modest variations in elevation — a maximum elevation change of 209 m.

The land around Sosnovyy Bor is covered by trees (63%) within 3 km, water (48%) and trees (45%) within 16 km, and trees (47%) and water (36%) within 80 km.

3 km
36 m
16 km
99 m
80 km
209 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Lomonosov 38 km · Kronstadt 40 km · Petrodvorets 40 km · Peterhof 45 km · Sestroretsk 54 km · Kurortnyy 54 km · Krasnoye Selo 59 km · Sosnovaya Polyana 60 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 Sosnovyy Bor (59.8996°, 29.0857°, elevation 17 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).