Sevan weather in September

In September, Sevan sees average daytime highs of 17°C and overnight lows near 8°C, with 67 mm of precipitation across 12.8 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 19°C in the first days to 15°C by the end. The sky is clear or mostly clear about 45% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 54 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Sevan's 1st-clearest and 11th-windiest month. For the whole year in context, see Sevan's year-round climate.

Daytime high
17°
4th warmest
Overnight low
9th coldest
Precipitation
67 mm
12.8 wet days
Daylight
12 h 18 min
6:47 AM – 7:02 PM
Cloud cover
46%
1st clearest
Wind
5 km/h
11th windiest
Solar energy
4.68 kWh/m²
Travel score
5.2
out of 10

Sevan is city and a popular resort in Armenia.

Density
1,107/km²
people per km²
Founded
1842

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 19°C in the first days to 15°C by the end.

A typical September day in Sevan reaches about 17°C in the afternoon and slips back to 8°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 21°C. Set against its neighbours, September runs about 3°C cooler than August and about 5°C warmer than October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
11910
21910
31910
41910
51910
61810
71810
8189
9189
10189
11189
12189
13179
14179
15179
16178
17178
18178
19168
20168
21168
22168
23167
24167
25157
26157
27157
28157
29156
30146

How September really feels in Sevan

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.

Sevan weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-4° / -9°326.37.49.40.0
Feb-3° / -9°417.38.310.40.0
Mar / -5°7812.512.311.70.0
Apr / -0°112179.4130.8
May13° / 14321.82.214.22.7
Jun17° / 13821.1014.84.1
Jul19° / 11°10920.4014.64.8
Aug20° / 12°8518.9013.65.2
Sep17° / 6712.80.212.35.2
Oct12° / 6010.62.510.93.1
Nov / -2°457.76.29.70.2
Dec-1° / -7°356.47.29.20.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 45% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 36%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16535
26535
36535
46535
56535
66535
76535
86535
96535
106535
116535
126535
136535
146535
156535
166535
176535
186535
196436
206436
216436
226436
236337
246337
256238
266238
276238
286238
296238
306238

Chance of precipitation in September

Any precipitationSnow

Sevan gets around 67 mm of rain and snow over 12.8 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 43% and peaks near 49% on the wettest days, and about 0 day brings snow.

0%20%40%60%151015202530
Rain chance (%)Snow chance (%)
1490
2480
3470
4460
5450
6440
7440
8430
9420
10410
11410
12400
13400
14400
15401
16401
17401
18411
19411
20421
21421
22421
23421
24431
25431
26432
27432
28422
29422
30412

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 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
180191
282171
383161
485141
586131
688111
79091
89181
99460
109550
119640
129730
139820
149820
159910
169910
179910
189910
1910000
2010000
2110000
2210000
2310000
2410000
2510000
2610000
2710000
2810000
2910000
3010000

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 54 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 78 minutes over September. Sunrise moves from 6:32 AM to 7:01 AM, and sunset from 7:28 PM to 6:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.96:327:28
212.96:337:27
312.96:347:25
412.86:357:23
512.86:367:21
612.76:377:20
712.76:387:18
812.66:397:16
912.66:407:15
1012.56:417:13
1112.56:427:11
1212.46:437:09
1312.46:447:08
1412.46:457:06
1512.36:467:04
1612.36:477:02
1712.26:487:01
1812.26:496:59
1912.16:506:57
2012.16:516:55
2112.06:526:54
2212.06:536:52
2311.96:546:50
2411.96:556:48
2511.96:566:47
2611.86:576:45
2711.86:586:43
2811.76:596:42
2911.77:006:40
3011.67:016:38

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.68 kWh/m².

For context, solar energy here swings from a low near 2.23 kWh/m² to a high of 6.35 kWh/m² in June across the year — September's 4.68 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.1Bright
45.1Bright
55.1Bright
65.0Bright
75.0Bright
85.0Bright
94.9Bright
104.9Bright
114.8Bright
124.8Bright
134.8Bright
144.7Bright
154.7Bright
164.7Bright
174.6Bright
184.6Bright
194.5Bright
204.5Bright
214.5Bright
224.4Bright
234.4Bright
244.4Bright
254.3Bright
264.3Bright
274.3Bright
284.2Bright
294.2Bright
304.2Bright
Planning a trip in September

Hazard calendar for Sevan

In seasonPeak

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

Sevan's rainy season runs March–September, 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 Sevan?

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

5.2
Sightseeing
1st-best month of the year
1.2
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Sevan for sightseeing.

What to pack for Sevan in September

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

In September, Sevan sees daytime highs around 17°C and nights near 8°C. Worth packing: a warm layer, rain gear and sun protection. About 13 days see rain.

a warm layerrain gearsun protection

UV index in Sevan in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Sevan peaks around June 21 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highModerateJun 21UV 10Dec 21UV 2
UV index (midday)Level
Jan2Moderate
Feb4Moderate
Mar4Moderate
Apr6High
May9Very high
Jun11Extreme
Jul10Extreme
Aug10Extreme
Sep7Very high
Oct5Moderate
Nov3Moderate
Dec2Low

Air quality in Sevan 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 Sevan is worst in May — around 21 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (December, 11 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodMay 1121 µg/m³Dec 2211 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb15Moderate
Mar18Moderate
Apr21Moderate
May21Moderate
Jun20Moderate
Jul18Moderate
Aug16Moderate
Sep15Moderate
Oct14Moderate
Nov12Moderate
Dec11Good
Location & terrain

Where is Sevan?

Sevan sits at 40.5°N, 45.0°E, 1,892 m above sea level, in Armenia. The nearest listed city is Hrazdan, 17 km away.

HrazdanTsaghkadzorDilijanGavarCharentsavanIjevanAbovyanVanadzor

Topography around Sevan

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

Within 3 km, the terrain around Sevan has significant variations in elevation — a maximum elevation change of 476 m around an average of 1,975 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,392 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,792 m.

The land around Sevan is covered by grassland (59%) within 3 km, grassland (66%) and water (22%) within 16 km, and grassland (62%) within 80 km.

3 km
476 m
16 km
1,392 m
80 km
3,792 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Hrazdan 17 km · Tsaghkadzor 20 km · Dilijan 23 km · Gavar 26 km · Charentsavan 31 km · Ijevan 40 km · Abovyan 41 km · Vanadzor 48 km

Armenia travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 38% of US
price level, 2025
GDP per capita
$9,474
2025
Happiness
5.6 / 10
World Happiness, 2025
Safe drinking water
82%
of population, 2024
Homicide rate
2.2
per 100k, 2023
Road deaths
20
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Moderate
EF EPI 515
Religion
Armenian Apostolic 95%not stated 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 Sevan (40.548°, 44.9531°, elevation 1,892 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).