Divača weather in September

In September, Divača sees average daytime highs of 20°C and overnight lows near 12°C, with 172 mm of rain across 12.1 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 2nd-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 30 min by month's end. Set against the rest of the year, September is Divača's 4th-clearest and 7th-windiest month. For the whole year in context, see Divača's year-round climate.

Daytime high
20°
4th warmest
Overnight low
12°
9th coldest
Rainfall
172 mm
12.1 wet days
Daylight
12 h 18 min
5:49 AM – 6:08 PM
Cloud cover
52%
4th clearest
Wind
8 km/h
7th windiest
Solar energy
3.8 kWh/m²
Travel score
6.1
out of 10

Divača is human settlement.

Density
174/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 23°C in the first days to 18°C by the end.

A typical September day in Divača reaches about 20°C in the afternoon and slips back to 12°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 25°C. Set against its neighbours, September runs about 5°C cooler than August and about 5°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12314
22314
32314
42214
52214
62214
72213
82213
92113
102113
112113
122113
132112
142112
152012
162012
172012
182012
192012
202011
211911
221911
231911
241911
251911
261911
271811
281811
291810
301810

How September really feels in Divača

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.

Divača weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°969.94.28.90.0
Feb / -1°1099.44.410.10.6
Mar10° / 11010.82.811.62.5
Apr15° / 12413.2113.34.2
May19° / 11°14214.7014.75.5
Jun23° / 15°13013.9015.46.3
Jul26° / 16°11212.6015.16.7
Aug25° / 16°13212.4013.96.7
Sep20° / 12°17212.1012.36.1
Oct15° / 16012.50.310.74.5
Nov10° / 18713.11.79.32.0
Dec / -0°131103.28.60.2

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 20% of September, with mostly cloudy or overcast conditions the remaining 43%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16139
26139
36139
46238
56238
66238
76238
86139
96139
106040
116040
125941
135941
145842
155743
165842
175743
185644
195545
205545
215545
225347
235347
245347
255248
265149
275149
285050
294951
304951

Chance of precipitation in September

Any precipitation

Divača gets around 172 mm of rain over 12.1 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 42% and peaks near 43% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
142
242
342
442
542
642
742
842
942
1043
1143
1243
1343
1443
1543
1643
1743
1842
1942
2042
2141
2241
2341
2441
2541
2641
2741
2842
2942
3043

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 55% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
13338272
23538252
33738242
43838231
53938211
64138201
74238191
84338181
94438171
104537171
114737161
124837150
135036140
145235130
155434120
165533120
175732110
186030100
19622990
20642880
21652780
22672670
23692560
24702550
25712450
26722440
27722440
28732430
29732430
30742330

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 8 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
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
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 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 96 minutes over September. Sunrise moves from 5:30 AM to 6:07 AM, and sunset from 6:38 PM to 5:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:306:38
213.15:316:36
313.05:326:34
413.05:346:32
512.95:356:30
612.95:366:28
712.85:386:26
812.85:396:24
912.75:406:22
1012.65:416:20
1112.65:436:18
1212.55:446:16
1312.55:456:14
1412.45:466:12
1512.45:486:10
1612.35:496:08
1712.35:506:06
1812.25:516:04
1912.25:536:02
2012.15:546:00
2112.05:555:58
2212.05:575:56
2311.95:585:54
2411.95:595:52
2511.86:015:50
2611.86:025:48
2711.76:035:46
2811.76:045:44
2911.66:065:42
3011.56:075:40

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.8 kWh/m².

For context, solar energy here swings from a low near 1.1 kWh/m² to a high of 6.22 kWh/m² in July across the year — September's 3.8 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.4Bright
44.4Bright
54.3Bright
64.3Bright
74.2Bright
84.2Bright
94.1Bright
104.1Bright
114.0Bright
124.0Moderate
133.9Moderate
143.9Moderate
153.8Moderate
163.7Moderate
173.7Moderate
183.6Moderate
193.6Moderate
203.5Moderate
213.5Moderate
223.4Moderate
233.4Moderate
243.4Moderate
253.3Moderate
263.3Moderate
273.2Moderate
283.1Moderate
293.1Moderate
303.0Moderate
Planning a trip in September

Is September a good time to visit Divača?

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

6.1
Sightseeing
4th-best month of the year
3.3
Beach & pool
4th-best month of the year

September is a reasonable time to visit Divača for sightseeing.

What to pack for Divača in September

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

In September, Divača sees daytime highs around 20°C and nights near 12°C. Worth packing: rain gear. About 12 days see rain.

rain gear

Sea temperature near Divača in September

The nearest coast averages about 23°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 28 km away) is warmest in August at about 25°C and coldest in February near 10°C.

It's comfortable for a long swim from May 31 to Oct 9 — about 4.3 months when the water holds above 20°C.

10°20°30°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan11Bracing
Feb10Bracing
Mar10Bracing
Apr13Bracing
May18Cool
Jun23Refreshing
Jul25Warm
Aug25Warm
Sep23Refreshing
Oct19Cool
Nov16Cool
Dec13Bracing

UV index in Divača in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Divača peaks around July 16 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 10 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 16UV 9Jan 10UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr7High
May7High
Jun8Very high
Jul9Very high
Aug8Very high
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Divača 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 Divača is worst in January — around 19 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateJan 1918 µg/m³Sep 1512 µg/m³
PM2.5 (µg/m³)Level
Jan19Moderate
Feb17Moderate
Mar18Moderate
Apr18Moderate
May15Moderate
Jun16Moderate
Jul14Moderate
Aug13Moderate
Sep12Good
Oct13Moderate
Nov13Moderate
Dec15Moderate
Location & terrain

Where is Divača?

Divača sits at 45.7°N, 14.0°E, 0 m above sea level, in Slovenia. The nearest listed city is Trieste, 16 km away.

TriestePostojnaKoperPiranMonfalconeNova GoricaGoriziaRijeka

Topography around Divača

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

Within 3 km, the terrain around Divača has significant variations in elevation — a maximum elevation change of 312 m around an average of 454 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,303 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,763 m.

The land around Divača is covered by trees (66%) and grassland (28%) within 3 km, trees (78%) within 16 km, and trees (59%) within 80 km.

3 km
312 m
16 km
1,303 m
80 km
2,763 m
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Trieste 16 km · Postojna 21 km · Koper 24 km · Piran 36 km · Monfalcone 36 km · Nova Gorica 39 km · Gorizia 39 km · Rijeka 54 km

Slovenia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 63% of US
price level, 2025
GDP per capita
$37,376
2025
Happiness
6.9 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
0.6
per 100k, 2023
Road deaths
5.1
per 100k/yr, 2019
Income group
High
World Bank
Religion
Catholic 69%atheist 14%Orthodox 4%non-believer/agnostic 4%

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 Divača (45.6848°, 13.9705°, elevation 0 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. 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).