Climate Insights for Rosetta

The climate in Rosetta is warm and mild. The average annual temperature is 22°C and approximately 170mm of precipitation falls per year. January is the wettest month, receiving around 47mm of rainfall. Rosetta is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are February, January, March, when temperatures can drop to 14°C.

Rosetta sees moderate temperature variation throughout the year, ranging from 14°C to 29°C. The warmest month is August, when average highs reach 29°C and the mean temperature sits around 28°C. February is the coolest month, with minimum temperatures around 14°C and an average of 15°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between November and December, with a 3°C shift in average temperatures.

Rosetta is a quite dry location, receiving approximately 170mm of precipitation annually, which averages out to around 14mm per month. The wettest month is January, averaging 47mm of rainfall. December and February also tend to see above-average precipitation. The driest month is July, with just 0mm. That's 47mm less than January, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Rosetta is mildly breezy, with an average annual wind speed of 16km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 19km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 15km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h between the calmest and windiest months.

It is currently summer in Rosetta, which began on June 21, 2026. Rosetta is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 29°C, while the coldest stretch bottoms out in February near 14°C. Autumn is next, beginning on September 23, 2026 (7 days from now).

The best time to visit Rosetta is during January, February, March, April, May, October, November and December, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 21mm per month. By contrast, August can be uncomfortably hot with temperatures reaching 29°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Rosetta based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.