Dilijan weather in September

In September, Dilijan sees average daytime highs of 18°C and overnight lows near 9°C, with 75 mm of precipitation across 13.6 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 20°C in the first days to 16°C by the end. The sky is clear or mostly clear about 36% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Dilijan's 4th-clearest and 10th-windiest month. For the whole year in context, see Dilijan's year-round climate.

Daytime high
18°
4th warmest
Overnight low
9th coldest
Precipitation
75 mm
13.6 wet days
Daylight
12 h 18 min
6:47 AM – 7:03 PM
Cloud cover
54%
4th clearest
Wind
4 km/h
10th windiest
Solar energy
4.45 kWh/m²
Travel score
5.2
out of 10

Dilijan is town in Tavush, Armenia.

Density
1,224/km²
people per km²

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 20°C in the first days to 16°C by the end.

A typical September day in Dilijan reaches about 18°C in the afternoon and slips back to 9°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 22°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)
12011
22011
32010
41910
51910
61910
71910
81910
91910
10199
11189
12189
13189
14189
15189
16189
17189
18178
19178
20178
21178
22178
23178
24167
25167
26167
27167
28167
29157
30157

How September really feels in Dilijan

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.

Dilijan 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-2° / -10°367.27.99.40.0
Feb-1° / -8°468.59.410.40.0
Mar / -4°9314.613.111.70.0
Apr / 14319.88.913.11.3
May14° / 17724.11.914.22.8
Jun18° / 15521.8014.94.3
Jul20° / 12°11018.8014.65.1
Aug21° / 12°8117.4013.65.5
Sep18° / 7513.60.112.35.2
Oct13° / 7211.62.210.93.4
Nov / -2°508.369.70.5
Dec-0° / -8°376.57.19.10.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 36% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 20% of September, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15842
25842
35743
45743
55842
65842
75842
85842
95842
105842
115842
125842
135743
145743
155743
165644
175644
185545
195446
205446
215446
225347
235347
245347
255347
265347
275248
285347
295347
305347

Chance of precipitation in September

Any precipitationSnow

Dilijan gets around 75 mm of rain and snow over 13.6 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 46% and peaks near 51% on the wettest days, and about 0 day brings snow.

0%20%40%60%151015202530
Rain chance (%)Snow chance (%)
1510
2510
3500
4490
5490
6480
7470
8470
9460
10460
11450
12450
13450
14440
15440
16440
17440
18451
19451
20451
21451
22451
23451
24451
25451
26451
27451
28441
29442
30432

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 (%)
177221
279201
380191
482171
584151
686131
788111
89091
99271
109361
119451
129640
139730
149820
159820
169910
179910
189910
199910
2010000
2110000
2210000
2310000
2410000
2510000
2610000
2710000
2810000
2910000
3010000

Wind in September

Winds average 4 km/h in September.

Across September, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours 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 84 minutes over September. Sunrise moves from 6:32 AM to 7:01 AM, and sunset from 7:29 PM to 6:38 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:327:29
212.96:337:27
312.96:347:25
412.86:357:24
512.86:367:22
612.76:377:20
712.76:387:19
812.66:397:17
912.66:407:15
1012.56:417:13
1112.56:427:12
1212.56:437:10
1312.46:447:08
1412.46:457:06
1512.36:467:05
1612.36:477:03
1712.26:487:01
1812.26:496:59
1912.16:506:58
2012.16:516:56
2112.06:526:54
2212.06:536:52
2311.96:546:51
2411.96:556:49
2511.86:566:47
2611.86:576:45
2711.86:586:44
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 4.45 kWh/m².

For context, solar energy here swings from a low near 2.16 kWh/m² to a high of 6.3 kWh/m² in June across the year — September's 4.45 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
34.9Bright
44.9Bright
54.9Bright
64.8Bright
74.8Bright
84.8Bright
94.7Bright
104.7Bright
114.6Bright
124.6Bright
134.5Bright
144.5Bright
154.5Bright
164.4Bright
174.4Bright
184.3Bright
194.3Bright
204.3Bright
214.2Bright
224.2Bright
234.2Bright
244.1Bright
254.1Bright
264.1Bright
274.0Bright
284.0Moderate
294.0Moderate
303.9Moderate
Planning a trip in September

Hazard calendar for Dilijan

In seasonPeak

None of Dilijan's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Dilijan's rainy season runs March–August, 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 Dilijan?

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

5.2
Sightseeing
2nd-best month of the year
1.6
Beach & pool
3rd-best month of the year

September is a reasonable time to visit Dilijan for sightseeing.

What to pack for Dilijan in September

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

In September, Dilijan sees daytime highs around 18°C and nights near 9°C. Pack rain gear. About 14 days see rain.

rain gear

UV index in Dilijan 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 Dilijan peaks around June 21 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJun 21UV 10Dec 20UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun10Very high
Jul10Very high
Aug10Very high
Sep7High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Dilijan 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 Dilijan 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 Dilijan?

Dilijan sits at 40.7°N, 44.9°E, 1,345 m above sea level, in Armenia. The nearest listed city is Sevan, 23 km away.

SevanTsaghkadzorHrazdanIjevanVanadzorCharentsavanAlaverdiGavar

Topography around Dilijan

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

Within 3 km, the terrain around Dilijan has large variations in elevation — a maximum elevation change of 943 m around an average of 1,462 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,149 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,861 m.

The land around Dilijan is covered by trees (64%) and grassland (26%) within 3 km, grassland (64%) and trees (34%) within 16 km, and grassland (58%) and trees (21%) within 80 km.

3 km
943 m
16 km
2,149 m
80 km
3,861 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Sevan 23 km · Tsaghkadzor 26 km · Hrazdan 26 km · Ijevan 29 km · Vanadzor 32 km · Charentsavan 42 km · Alaverdi 43 km · Gavar 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 Dilijan (40.7404°, 44.8634°, elevation 1,345 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).