Weather in Mostar - 14-day forecast

Detailed weather forecast for Mostar, Bosnia and Herzegovina: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.

Forecast for the next days in Mostar

today☀️ 34°💧 16.1 mm

Sun☀️ 31°💧 0.3 mm

Mon☀️ 34°💧 7.6 mm

Tue🌤️ 32°💧 0.1 mm

Wed☀️ 31°💧 1.6 mm

Thu🌧️ 31°💧 3.6 mm

Fri☁️ 28°💧 20.6 mm

Sat🌧️ 27°💧 0.2 mm

Forecast vs 1991-2020 climate normal

How does the current forecast compare with normal?

We compare the coming days with weather usually observed at this time of year.

NASA POWER

Saturday 5 Sept in Mostar, the forecast high is 34°C. Typical daytime temperatures at this time of year range from 20°C to 28°C, so it will be exceptionally warm. It is warmer than 99% of similar days.

Saturday 5 Sept

34°Cexceptionally warm

usually 20°C–28°C

warmer than 99% of similar days

night: exceptionally warm rain: exceptionally wet wind: typical

Sunday 6 Sept

31°Cexceptionally warm

usually 20°C–28°C

warmer than 97% of similar days

night: exceptionally warm rain: typical rainfall wind: typical

Monday 7 Sept

34°Cexceptionally warm

usually 20°C–28°C

warmer than 99% of similar days

night: exceptionally warm rain: exceptionally wet wind: typical

Tuesday 8 Sept

32°Cexceptionally warm

usually 20°C–27°C

warmer than 99% of similar days

night: exceptionally warm rain: typical rainfall wind: lighter than usual

Wednesday 9 Sept

31°Cexceptionally warm

usually 19°C–27°C

warmer than 97% of similar days

night: exceptionally warm rain: more rain than usual wind: typical

Thursday 10 Sept

31°Cexceptionally warm

usually 19°C–27°C

warmer than 97% of similar days

night: exceptionally warm rain: more rain than usual wind: typical

Friday 11 Sept

28°Cwarmer than usual

usually 19°C–26°C

warmer than 86% of similar days

night: exceptionally warm rain: exceptionally wet wind: typical

How warm was this week in previous years?

Each bar shows the average daily high during the same 7-day period in each year.

swipe to see more years →

cooler yearstypical rangewarmer years2026 forecastcurrent forecast

From 1981 to 2025, the 5-11 Sept period averaged 23°C by day. The coolest year was 2007 (16°C) and the warmest was 2008 (31°C). The current forecast averages 32°C - higher than in 100% of historical years.

Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.

Weather warnings - Mostar

Heatorange level

from 5 Sept, 10:00 to 7 Sept, 17:00

Areas: MOSTAR

High temperatures and risk of overheating. Drink plenty of water, avoid the midday sun and look after the elderly.

Source: national weather service via Meteoalarm (EUMETNET). Yellow - be aware, orange - be prepared, red - take action.

14-day forecast - Mostar

Mostar - 14-day weather forecast infographic

Mostar 30 & 45-day weather - long-range outlook

Next 16 days · forecast

30°

around 21° at night · days with rain: 9

Weeks 3-4 · avg for September

27°

around 14° at night · rain chance 35%

Weeks 5-7 · avg for October

22°

around 10° at night · rain chance 35%

The 30 & 45-day outlook for Mostar: the next 16 days are a numerical forecast updated daily - on average 30° by day and 21° at night. Further out we rely on multi-year climate averages: around 27° in September, and about 22° in October. Forecasts beyond two weeks are indicative only.

Day-by-day forecast for Mostar

Saturday5 September 2026

☀️34°clear sky

sunrise 06:17 · sunset 19:18 · night 25° · evening 33° · rain 16.08 mm · humidity 21% · wind 5 m/s · clouds 2%

Sunday6 September 2026

☀️31°clear sky

sunrise 06:18 · sunset 19:16 · night 21° · evening 31° · rain 0.33 mm · humidity 28% · wind 4 m/s · clouds 1%

Monday7 September 2026

☀️34°clear sky

sunrise 06:19 · sunset 19:14 · night 22° · evening 30° · rain 7.62 mm · humidity 22% · wind 6 m/s · clouds 1%

Tuesday8 September 2026

🌤️32°a few clouds

sunrise 06:20 · sunset 19:12 · night 22° · evening 31° · rain 0.12 mm · humidity 24% · wind 4 m/s · clouds 23%

Wednesday9 September 2026

☀️31°clear sky

sunrise 06:21 · sunset 19:11 · night 21° · evening 30° · rain 1.62 mm · humidity 30% · wind 4 m/s · clouds 5%

Thursday10 September 2026

🌧️31°light rain

sunrise 06:22 · sunset 19:09 · night 18° · evening 31° · rain 3.6 mm · humidity 30% · wind 4 m/s · clouds 3%

Friday11 September 2026

☁️28°broken clouds

sunrise 06:23 · sunset 19:07 · night 20° · evening 28° · rain 20.61 mm · humidity 43% · wind 4 m/s · clouds 70%

Saturday12 September 2026

🌧️27°light rain

sunrise 06:24 · sunset 19:05 · night 20° · evening 26° · rain 0.21 mm · humidity 49% · wind 4 m/s · clouds 42%

Sunday13 September 2026

🌧️28°light rain

sunrise 06:25 · sunset 19:03 · night 17° · evening 25° · rain 1.89 mm · humidity 40% · wind 5 m/s · clouds 62%

Monday14 September 2026

🌤️24°a few clouds

sunrise 06:27 · sunset 19:02 · night 18° · evening 28° · rain 43.68 mm · humidity 52% · wind 4 m/s · clouds 24%

Tuesday15 September 2026

☀️29°clear sky

sunrise 06:28 · sunset 19:00 · night 20° · evening 28° · rain 3.36 mm · humidity 35% · wind 4 m/s · clouds 94%

Wednesday16 September 2026

☀️29°clear sky

sunrise 06:29 · sunset 18:58 · night 21° · evening 29° · rain 35.85 mm · humidity 36% · wind 4 m/s · clouds 87%

Thursday17 September 2026

🌧️31°light rain

sunrise 06:30 · sunset 18:56 · night 21° · evening 29° · rain 0.9 mm · humidity 35% · wind 3 m/s · clouds 97%

Friday18 September 2026

🌧️31°light rain

sunrise 06:31 · sunset 18:54 · night 21° · evening 31° · rain 0.45 mm · humidity 32% · wind 3 m/s · clouds 18%

Saturday19 September 2026

☁️32°broken clouds

sunrise 06:32 · sunset 18:53 · night 22° · evening 32° · humidity 23% · wind 4 m/s · clouds 57%

Sunday20 September 2026

☀️32°clear sky

sunrise 06:33 · sunset 18:51 · night 23° · evening 31° · humidity 22% · wind 3 m/s · clouds 4%

UV index in Mostar - is it safe to sunbathe?

Today the UV index in Mostar is 6 (high) - unprotected fair skin can burn in about 30 minutes. SPF 30-50, a hat and sunglasses are a must. Better stay in shade between 11:00 and 15:00.

Pollen in Mostar - info for allergy sufferers

Today ragweed pollen is highest in Mostar - about 105 grains/m³, very high level. Allergy sufferers should limit time outdoors on dry, windy days and take medication as advised. Pollen levels are a CAMS model forecast and are indicative.

Mostar weather through the year

Warmest, driest months on average: April, May, June, July.

Nearby and related places

KonjicKorčulaSarajevoDubrovnikTrebinjeZenicaTravnikPrijedorDobojBijeljina

FAQ - Mostar weather

What is the weather like in Mostar today?

Today it is about 34° during the day and 25° at night, clear sky.

How far ahead can I check the forecast for Mostar?

This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.