Neum weather in September

In September, Neum sees average daytime highs of 25°C and overnight lows near 16°C, with 135 mm of rain across 8.4 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 27°C in the first days to 23°C by the end. The sky is clear or mostly clear about 54% of the time in September, and the air most often feels humid.

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 Neum's 4th-clearest and 8th-windiest month. For the whole year in context, see Neum's year-round climate.

Daytime high
25°
4th warmest
Overnight low
16°
9th coldest
Rainfall
135 mm
8.4 wet days
Daylight
12 h 18 min
5:35 AM – 5:52 PM
Cloud cover
41%
4th clearest
Wind
9 km/h
8th windiest
Solar energy
4.62 kWh/m²
Travel score
7.3
out of 10

Neum is place in Neum Municipality.

Density
19/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 27°C in the first days to 23°C by the end.

A typical September day in Neum reaches about 25°C in the afternoon and slips back to 16°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 29°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°35°151015202530
Avg high (°C)Avg low (°C)
12819
22818
32718
42718
52718
62718
72718
82617
92617
102617
112617
122617
132617
142517
152516
162516
172516
182516
192416
202416
212416
222415
232415
242415
252315
262315
272315
282315
292314
302314

Neum weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan10° / 13711.50.79.22.3
Feb11° / 126111.110.22.8
Mar14° / 11810.50.511.64.3
Apr18° / 10°11911.3013.15.6
May22° / 14°849.3014.47.0
Jun27° / 18°586.2015.17.3
Jul30° / 20°284.5014.86.2
Aug30° / 20°525.3013.86.1
Sep25° / 16°1358.4012.37.3
Oct20° / 12°16310.4010.86.6
Nov15° / 20813.60.19.54.4
Dec11° / 18012.70.48.92.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 54% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 32%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17921
27723
37723
47525
57525
67426
77327
87327
97228
107129
117030
127030
136832
146832
156733
166733
176733
186535
196535
206535
216535
226436
236436
246436
256436
266337
276337
286337
296337
306238

Chance of precipitation in September

Any precipitation

Neum gets around 135 mm of rain over 8.4 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 29% and peaks near 32% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
125
225
326
426
526
627
727
827
928
1028
1128
1229
1329
1429
1529
1629
1730
1830
1930
2030
2130
2230
2330
2430
2530
2630
2731
2831
2932
3032

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the humid band about 34% of days. Sticky, muggy-or-worse air turns up on roughly 7% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
117234417
218234415
319244314
420244313
520254312
621264211
722274210
82327429
92328418
102428407
112529407
122629396
132729386
142830376
152930355
163030345
173231335
183331325
193531304
203630294
213830284
223930274
234030263
244230263
254230253
264330243
274330242
284431232
294431232
304432231

Wind in September

Winds average 9 km/h in September.

Across September, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm

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 5:18 AM to 5:51 AM, and sunset from 6:20 PM to 5:26 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:186:20
213.05:206:18
312.95:216:16
412.95:226:15
512.85:236:13
612.85:246:11
712.75:256:09
812.75:266:07
912.65:276:06
1012.65:296:04
1112.55:306:02
1212.55:316:00
1312.45:325:58
1412.45:335:56
1512.35:345:54
1612.35:355:52
1712.25:365:51
1812.25:375:49
1912.15:395:47
2012.15:405:45
2112.05:415:43
2212.05:425:41
2311.95:435:39
2411.95:445:38
2511.85:455:36
2611.85:475:34
2711.75:485:32
2811.75:495:30
2911.65:505:28
3011.65:515:26

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.62 kWh/m².

For context, solar energy here swings from a low near 1.49 kWh/m² to a high of 7.08 kWh/m² in July across the year — September's 4.62 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.3Bright
35.3Bright
45.2Bright
55.2Bright
65.1Bright
75.0Bright
85.0Bright
94.9Bright
104.9Bright
114.8Bright
124.8Bright
134.7Bright
144.7Bright
154.6Bright
164.6Bright
174.5Bright
184.5Bright
194.4Bright
204.4Bright
214.3Bright
224.3Bright
234.2Bright
244.2Bright
254.1Bright
264.1Bright
274.0Bright
284.0Moderate
293.9Moderate
303.9Moderate
Planning a trip in September

Is September a good time to visit Neum?

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

7.3
Sightseeing
1st-best month of the year
6.6
Beach & pool
4th-best month of the year

September is one of the better times to visit Neum for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Neum in September

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

In September, Neum sees daytime highs around 25°C and nights near 16°C. Worth packing: light clothes, rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

Sea temperature near Neum 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 20 km away) is warmest in August at about 25°C and coldest in February near 14°C.

It's comfortable for a long swim from May 30 to Oct 28 — about 5 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb14Bracing
Mar14Bracing
Apr15Cool
May18Cool
Jun22Refreshing
Jul24Warm
Aug25Warm
Sep23Refreshing
Oct21Refreshing
Nov19Cool
Dec16Cool

UV index in Neum 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 Neum peaks around July 16 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 highModerateLowJul 16UV 9Dec 20UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar5Moderate
Apr7High
May7High
Jun8Very high
Jul9Very high
Aug8Very high
Sep5High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Neum?

Neum sits at 42.9°N, 17.6°E, 0 m above sea level, in Bosnia and Herzegovina. The nearest listed city is Međugorje, 31 km away.

MeđugorjeKorčulaMostarDubrovnikTrebinjeKonjicHerceg NoviHvar

Topography around Neum

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

Within 3 km, the terrain around Neum has significant variations in elevation — a maximum elevation change of 389 m around an average of 98 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 949 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,187 m.

The land around Neum is covered by trees (43%), water (32%) and shrubs (20%) within 3 km, trees (36%), shrubs (29%) and water (25%) within 16 km, and water (40%) and trees (34%) within 80 km.

3 km
389 m
16 km
949 m
80 km
2,187 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetland
September weather nearby: Međugorje 31 km · Korčula 39 km · Mostar 49 km · Dubrovnik 51 km · Trebinje 64 km · Konjic 86 km · Herceg Novi 92 km · Hvar 99 km

Bosnia and Herzegovina travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 40% of US
price level, 2025
GDP per capita
$10,382
2025
Happiness
6.4 / 10
World Happiness, 2025
Safe drinking water
86%
of population, 2024
Homicide rate
1.2
per 100k, 2023
Road deaths
13.5
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 591
Religion
Muslim 51%Orthodox 31%Roman Catholic 15%other 1%

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 Neum (42.9233°, 17.6156°, 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).