Climate Insights for Rosendal

The climate in Rosendal is temperate. The average annual temperature is 15°C and approximately 856mm of precipitation falls per year. January is the wettest month, receiving around 157mm of rainfall. Rosendal is in the Southern Hemisphere. The seasons are reversed — summer runs from December to February, while winter falls between June and August. The summer months are: December, January, February. The coldest months are July, June, August, when temperatures can drop to 0°C.

Temperatures in Rosendal vary considerably across the year, with a 27°C difference between the coldest and warmest months. The warmest month is December, when average highs reach 27°C and the mean temperature sits around 20°C. The coldest month is July, when overnight lows fall to 0°C and the daily average is 8°C. On average, daily temperatures fluctuate by about 15°C between overnight lows and afternoon highs. The sharpest temperature change occurs between August and September, with a 4°C shift in average temperatures.

Rosendal is a moderately rainy area, receiving approximately 856mm of precipitation annually, which averages out to around 71mm per month. The wettest month is January, averaging 157mm of rainfall. December and February also tend to see above-average precipitation. The driest month is July, with just 10mm. That's 147mm 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.

Rosendal is mildly breezy, with an average annual wind speed of 17km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is November, averaging 20km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 14km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 6km/h gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 15km/h in winter, 20km/h in spring, 18km/h in summer, 15km/h in autumn.

It is currently winter in Rosendal, which began on June 21, 2026. Rosendal is in the Southern Hemisphere, where the seasons are reversed — spring starts in September, summer in December, autumn in March, and winter in June. The warmest period peaks in December at around 27°C, while the coldest stretch bottoms out in July near 0°C. Autumn is next, beginning on March 20, 2026 — 3 days from now.

The best time to visit Rosendal is during March and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 78mm per month. By contrast, December can be uncomfortably hot with highs reaching 27°C, while July is the coldest period with lows dropping to 0°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Rosendal 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.