Slantsy weather in September

In September, Slantsy sees average daytime highs of 15°C and overnight lows near 8°C, with 56 mm of rain across 11.3 wet days and about 12.6 hours of daylight. It is the 5th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 18°C in the first days to 13°C by the end. The sky is clear or mostly clear about 15% 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 18 min by month's end. Set against the rest of the year, September is Slantsy's 7th-clearest and 7th-windiest month. For the whole year in context, see Slantsy's year-round climate.

Daytime high
15°
5th warmest
Overnight low
9th coldest
Rainfall
56 mm
11.3 wet days
Daylight
12 h 30 min
6:46 AM – 7:17 PM
Cloud cover
70%
7th clearest
Wind
13 km/h
7th windiest
Solar energy
2.5 kWh/m²
Travel score
4.4
out of 10

Slantsy is town in Leningrad Oblast, Russia.

Density
1,006/km²
people per km²
Founded
1934

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 18°C in the first days to 13°C by the end.

A typical September day in Slantsy reaches about 15°C in the afternoon and slips back to 8°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 20°C. Set against its neighbours, September runs about 5°C cooler than August and about 7°C warmer than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
11810
21810
31810
41810
51710
61710
71710
8179
9179
10169
11169
12169
13169
14169
15158
16158
17158
18158
19158
20148
21147
22147
23147
24147
25137
26137
27137
28137
29136
30126

How September really feels in Slantsy

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.

Slantsy weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-3° / -7°4711.511.56.60.0
Feb-2° / -8°389.59.28.80.0
Mar / -4°389.76.511.30.0
Apr / 409.42.414.12.0
May16° / 549.90.116.64.9
Jun19° / 11°8712.70185.7
Jul22° / 14°7512.5017.46.2
Aug21° / 12°8013.2015.25.9
Sep15° / 5611.3012.64.4
Oct / 5912.21.69.81.4
Nov / -1°5311.85.67.40.0
Dec-1° / -5°5212.510.160.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 15% 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 68%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13367
23367
33466
43466
53367
63367
73367
83466
93466
103466
113367
123367
133367
143268
153367
163367
173268
183268
193367
203169
213169
223169
233169
243070
253070
263070
273070
282971
292971
302872

Chance of precipitation in September

Any precipitation

Slantsy gets around 56 mm of rain over 11.3 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 38% and peaks near 40% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
138
237
337
436
536
636
737
837
937
1038
1138
1239
1339
1440
1540
1640
1740
1840
1940
2040
2140
2240
2339
2439
2539
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 90% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
174242
275232
377212
478202
579192
682171
783161
884151
985141
1086131
1188111
1290100
139190
149280
159370
169370
179460
189550
199640
209640
219730
229730
239730
249820
259820
269820
279820
289820
299910
309910

Wind in September

Winds average 13 km/h in September.

Across September, daily wind ranges from about 12 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 54 min at the start of September to 11 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 156 minutes over September. Sunrise moves from 6:12 AM to 7:19 AM, and sunset from 8:03 PM to 6:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.96:128:03
213.86:148:00
313.76:167:57
413.66:197:54
513.56:217:51
613.46:237:48
713.36:267:45
813.26:287:42
913.16:307:39
1013.16:337:36
1113.06:357:33
1212.96:377:30
1312.86:397:27
1412.76:427:24
1512.66:447:21
1612.56:467:17
1712.46:497:14
1812.36:517:11
1912.26:537:08
2012.26:567:05
2112.16:587:02
2212.07:006:59
2311.97:036:56
2411.87:056:53
2511.77:076:50
2611.67:106:47
2711.57:126:44
2811.47:146:41
2911.37:176:38
3011.37:196:35

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 2.5 kWh/m².

For context, solar energy here swings from a low near 0.2 kWh/m² to a high of 5.59 kWh/m² in June across the year — September's 2.5 kWh/m² falls in the middle.

01234151015202530
Solar energy (kWh/m²)Level
13.3Moderate
23.2Moderate
33.1Moderate
43.1Moderate
53.0Moderate
63.0Moderate
72.9Moderate
82.9Moderate
92.8Moderate
102.8Moderate
112.7Moderate
122.7Moderate
132.6Moderate
142.6Moderate
152.5Moderate
162.5Moderate
172.4Moderate
182.4Moderate
192.3Moderate
202.3Moderate
212.2Moderate
222.2Moderate
232.1Moderate
242.1Moderate
252.0Moderate
262.0Moderate
271.9Dim
281.9Dim
291.9Dim
301.8Dim
Planning a trip in September

Is September a good time to visit Slantsy?

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

4.4
Sightseeing
5th-best month of the year
0.6
Beach & pool
5th-best month of the year

September is a reasonable time to visit Slantsy for sightseeing.

What to pack for Slantsy in September

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

In September, Slantsy sees daytime highs around 15°C and nights near 8°C. Worth packing: a warm layer and rain gear. About 11 days see rain.

a warm layerrain gear

Sea temperature near Slantsy 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 at the nearest coast (about 58 km away) 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
Jun12Bracing
Jul17Cool
Aug18Cool
Sep15Bracing
Oct11Bracing
Nov7Bracing
Dec4Bracing

UV index in Slantsy in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Slantsy peaks around June 23 at about 5 (high) — a little sun protection helps at midday. It bottoms out near December 19 at about 0 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 23UV 5Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun5High
Jul5High
Aug5Moderate
Sep3Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Slantsy?

Slantsy sits at 59.1°N, 28.1°E, 46 m above sea level, in Russia. The nearest listed city is Narva, 29 km away.

Topography around Slantsy

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

Within 3 km, the terrain around Slantsy has only modest variations in elevation — a maximum elevation change of 62 m around an average of 42 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 116 m; within 80 km, only modest variations in elevation — a maximum elevation change of 185 m.

The land around Slantsy is covered by trees (73%) within 3 km, trees (84%) within 16 km, and trees (60%) and water (26%) within 80 km.

3 km
62 m
16 km
116 m
80 km
185 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Narva 29 km · Kingisepp 41 km · Kohtla-Järve 56 km · Rakvere 102 km · Sosnovyy Bor 104 km · Luga 109 km · Tartu 114 km · Gatchina 126 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 Slantsy (59.1179°, 28.0883°, elevation 46 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).