Measurements:
°C
°F
Mostar
70°F
SW 3 mph
Feels like: 70°F
Precip: 6%
World Resorts Bosnia Herzegovina Mostar Weather

Mostar Sea Water Temperature

Current Sea Water Temperature:
+82.4°F
Maximum Sea Water Temperature in September: 84.6°F
Minimum Sea Water Temperature in September: 71.8°F
Average water temperature in September: 77.3°F

Sea Water Temperature for the Last 10 Days:

September 08 82.4°F September 03 84.0°F
September 07 83.4°F September 02 84.6°F
September 06 83.0°F September 01 83.6°F
September 05 83.0°F August 31 82.8°F
September 04 83.6°F August 30 82.2°F

When is the Warmest Sea for Mostar?

According to our data for the last three years for Mostar the highest average sea water temperature was in August, July and September.

Average Water Temperature by Month, °F

Sea Water Temperature in August

Select Year: 2026 2025 2024

The average sea surface temperature in August 2026 for Mostar was 83.5°F. The maximum and minimum values were 81.0°F and 85.8°F respectively.

Sea Water Temperature in July

Select Year: 2026 2025 2024

The average sea surface temperature in July 2026 for Mostar was 80.7°F. The maximum and minimum values were 77.2°F and 84.2°F respectively.

Sea Water Temperature in September

Select Year: 2025 2024 2023

The average sea surface temperature in September 2025 for Mostar was 76.7°F. The maximum and minimum values were 74.8°F and 77.8°F respectively.

Best Time to Visit Mostar
The most sunny months:
July 26 days
August 25 days
June 22 days
The most warm months:
August 92.4 °F
July 91.5 °F
June 84.6 °F
Warmest sea temperature:
August 81.2 °F
July 79.9 °F
September 77.2 °F
The most cold months:
January 42.0 °F
December 45.5 °F
February 46.7 °F
The most rainy months:
November 7 days
March 6 days
December 6 days
The most windy months:
March 6 mph
February 6 mph
January 6 mph

Mostar on the Weather Map

Bosnia Herzegovina Resorts:
NAME
Jahorina +68
Mostar +70
Neum +70
Sarajevo +68
24 Hours Weather Forecast
Mostar
Local time: 23:03
09 sep, wednesday
0000 70°F
SW
3 mph
0300 68°F
SW
3 mph
0600 68°F
SW
3 mph
0900 80°F
NE
2 mph
1200 90°F
NE
7 mph
1500 90°F
NE
11 mph
1800 84°F
NE
5 mph
2100 74°F
SW
2 mph