Gromiljak Weather in May
What's the weather like in Gromiljak (Federation of Bosnia and Herzegovina) in May 2026?
The climate in Gromiljak during May can be summarized as mild and a little damp.
May is in the spring in Gromiljak and is typically the 5th warmest month of the year. Daytime maximum temperatures average around 20°C (67°F), whilst at night 8°C (46°F) is normal.
| Daytime temperature | 19.6°C 67.3°F |
|---|---|
| Nightly temperature | 7.8°C 46°F |
| Average temperature | 13.7°C 56.7°F |
| Daily sunshine | 7 hrs |
| Avg rainfall | 87 mm 3.4 ins |
| Rainy days | 13 days |
| Sea temperature | 17.9°C 64.2°F |
| Humidity | 65% |
| Windspeed | 9kph 6 mph |
On average May is the 5th wettest month of the year in Gromiljak with around 87mm 3.4 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.
On the flip side this corresponds to an average of 7 hours of sunshine per day.
May temperatures in Gromiljak
May rainfall
May hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Gromiljak in May 2025.
Other monthly averages
Gromiljak weather stats
| Hottest month: | July | 24.7°C 76.5°F |
|---|---|---|
| Driest month: | August | 71mm 2.8ins |
| Sunniest month: | August | 8.7hrs |
| Coldest month: | January | 2.2°C 36°F |
| Wettest month: | November | 111mm 4.4ins |
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