worldweather33°Cexceptionally warm
usually 23°C–27°C
warmer than 99% of similar days
night: warmer than usual
rain: exceptionally wet
wind: lighter than usual
Weather in Trebinje - 14-day forecast
Detailed weather forecast for Trebinje, Bosnia and Herzegovina: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Trebinje
today☀️
33°💧 24 mm
Sun☀️
33°💧 3.8 mm
Mon☀️
32°💧 3.8 mm
Tue🌧️
30°💧 0.2 mm
Wed☀️
29°💧 0.3 mm
Thu🌧️
29°💧 0.2 mm
Fri🌧️
27°💧 1.8 mm
Sat☀️
27°💧 9.4 mm
Forecast vs 1991-2020 climate normal
NASA POWERHow does the current forecast compare with normal?
We compare the coming days with weather usually observed at this time of year.
Saturday 5 Sept in Trebinje, the forecast high is 33°C. Typical daytime temperatures at this time of year range from 23°C to 27°C, so it will be exceptionally warm. It is warmer than 99% of similar days.
33°Cexceptionally warm
usually 23°C–27°C
warmer than 99% of similar days
night: warmer than usual
rain: more rain than usual
wind: lighter than usual
32°Cexceptionally warm
usually 23°C–27°C
warmer than 99% of similar days
night: warmer than usual
rain: more rain than usual
wind: lighter than usual
30°Cexceptionally warm
usually 23°C–27°C
warmer than 99% of similar days
night: near normal
rain: typical rainfall
wind: exceptionally light
29°Cexceptionally warm
usually 23°C–26°C
warmer than 97% of similar days
night: near normal
rain: typical rainfall
wind: exceptionally light
29°Cexceptionally warm
usually 22°C–26°C
warmer than 98% of similar days
night: cooler than usual
rain: typical rainfall
wind: exceptionally light
27°Cwarmer than usual
usually 22°C–26°C
warmer than 87% of similar days
night: cooler than usual
rain: more rain than usual
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.
cooler yearstypical rangewarmer years2026 forecastcurrent forecast
From 1981 to 2025, the 5-11 Sept period averaged 25°C by day. The coolest year was 2007 (21°C) and the warmest was 2020 (28°C). The current forecast averages 30°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Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window.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 - Trebinje
Heatorange level
from 5 Sept, 10:00 to 7 Sept, 17:00
Areas: TREBINJE
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 - Trebinje
Trebinje 30 & 45-day weather - long-range outlook
Next 16 days · forecast
30°
around 21° at night · days with rain: 7
Weeks 3-4 · avg for September
25°
around 18° at night · rain chance 29%
Weeks 5-7 · avg for October
21°
around 13° at night · rain chance 36%
The 30 & 45-day outlook for Trebinje: 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 25° in September, and about 21° in October. Forecasts beyond two weeks are indicative only.
Day-by-day forecast for Trebinje
Saturday5 September 2026
☀️33°clear sky
Sunday6 September 2026
☀️33°clear sky
Monday7 September 2026
☀️32°clear sky
Tuesday8 September 2026
🌧️30°light rain
Wednesday9 September 2026
☀️29°clear sky
Thursday10 September 2026
🌧️29°light rain
Friday11 September 2026
🌧️27°light rain
Saturday12 September 2026
☀️27°clear sky
Sunday13 September 2026
🌧️27°light rain
Monday14 September 2026
🌤️28°scattered clouds
Tuesday15 September 2026
☀️28°clear sky
Wednesday16 September 2026
☀️28°clear sky
Thursday17 September 2026
🌧️30°light rain
Friday18 September 2026
☁️31°broken clouds
Saturday19 September 2026
☁️30°broken clouds
Sunday20 September 2026
☀️30°clear sky
UV index in Trebinje - is it safe to sunbathe?
Today the UV index in Trebinje 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 Trebinje - info for allergy sufferers
Today ragweed pollen is highest in Trebinje - about 96 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.
Sea temperature - Trebinje
Water today
28°C
Week avg
28°C
Waves today
0.1 m
How's the water?
very warm
16-day sea temperature forecast:
Average sea temperature through the year:
Sea-surface temperature from marine models, updated daily. See also: where the sea is warmest right now.
Trebinje weather through the year
Warmest, driest months on average: April, May, June, July.
Nearby and related places
FAQ - Trebinje weather
What is the weather like in Trebinje today?
Today it is about 33° during the day and 23° at night, clear sky.
How far ahead can I check the forecast for Trebinje?
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.