Jupiter Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Jupiter.
Climate overview of Jupiter
Temperatures in Jupiter, Constanţa, Romania, vary greatly throughout the year. August is the hottest month at 29°C (84°F), while January is the coldest at 6°C (43°F).
Jupiter sees a moderate amount of rain/snowfall, totalling around 563 mm (22 in) per year. It experiences a distinct dry season from July to August, with warm summers and cold winters, creating some seasonal variation. The sunniest month is July, with 10.9 hours of sunshine per day on average.
Jupiter Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Jupiter - and find the best time to visit.
Monthly Temperature in Jupiter
The climate in Jupiter is known for significant temperature differences throughout the year, making the weather dynamic. Average maximum daytime temperatures range from a comfortable 29°C (84°F) in August, the warmest time of the year, to a chilly 6°C (43°F) during cooler months like January.
At night, you can expect temperatures ranging from 21°C (70°F) in August to around 1°C (34°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Jupiter
Generally, Jupiter receives mid-range precipitation levels, with 563 mm (22 in) annually. While rainfall varies throughout the year, each season offers its own charm. October brings wetter days averaging 58 mm (2.3 in) of precipitation, spread over 7 rainy days.
In contrast, the driest month August experiences a drier climate, with about 34 mm (1.3 in) of rainfall spread across 5 rainy days. For more details, please visit our Jupiter Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Jupiter
Seasonal changes in sunshine hours are quite dramatic in Jupiter. While July receives considerable daily sunshine with up to 10.9 hours, December marks the darkest time of the year, where sunshine is scarce with only 2.7 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Jupiter by Month
The city experiences its highest humidity in December, reaching 88%. In July, the humidity drops to its lowest level at 76%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Jupiter
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June, July, August and September
- Warmest weather: July and August
- Most sunshine: July
- Fewest rainy days: July, August, September and October
- Seasonal pattern: A distinct dry season from July to August, with warm summers and cold winters
Frequently asked questions about the climate in Jupiter
What is the best time to visit Jupiter?
May, June, July, August and September typically offer the most optimal weather in Jupiter. In contrast, January, February and December tend to have less optimal conditions. Jupiter has a distinct dry season from July to August, with warm summers and cold winters.
What temperatures can I expect in Jupiter?
Daytime highs range from 6°C (43°F) in January to 29°C (84°F) in August. Nighttime lows range from 1°C (34°F) to 21°C (70°F). Temperatures vary considerably through the year.
How much rain does Jupiter get?
Annual rainfall is around 563 mm (22 in). October is the wettest month with 58 mm (2.3 in), while August is the driest with 34 mm (1.3 in).
How sunny is Jupiter?
Jupiter receives around 2,297 hours of sunshine per year. July is the sunniest month with 326 hours, while December is the cloudiest with just 81 hours. Overall, Jupiter enjoys abundant sunshine.
Jupiter 3-Day Forecast
Jupiter on the map
Jupiter is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Bucharest
31°C (88°F) Timişoara30°C (86°F) Constanţa29°C (84°F) Mamaia29°C (84°F) Eforie Nord29°C (84°F) Cluj-Napoca26°C (79°F) Sibiu
26°C (79°F) Braşov
25°C (77°F) 
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