Climate Insights for Bonnievale

Cape Winelands District Municipality, Western Cape, South Africa

Hottest
January
16°C peak
Coldest
May
2°C low
Wettest
November
33mm rain
Best to Visit
Varies throughout year

Climate Overview

The climate in Bonnievale is cool. The average annual temperature is 6°C and approximately 264mm of precipitation falls per year. November is the wettest month, receiving around 33mm of rainfall. Bonnievale 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: January, February, September. The coldest months are May, April, February, when temperatures can drop to 2°C.

Temperature

10° 15° 20° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 16° Average: 10° Min: 3° Feb Max: 11° Average: 7° Min: 2° Mar Max: 8° Average: 6° Min: 4° Apr Max: 6° Average: 4° Min: 2° May Max: 6° Average: 3° Min: 2° Jun Max: 4° Average: 3° Min: 3° Jul Max: 4° Average: 3° Min: 3° Aug Max: 6° Average: 4° Min: 3° Sep Max: 9° Average: 7° Min: 5° Oct Max: 8° Average: 8° Min: 7° Nov Max: 8° Average: 7° Min: 7° Dec Max: 8° Average: 7° Min: 7°
Max
Average
Min

Bonnievale sees moderate temperature variation throughout the year, ranging from 2°C to 16°C. January is the warmest month, though highs remain moderate at 16°C with a mean of 10°C. May is the coolest month, with minimum temperatures around 2°C and an average of 3°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between August and September, with a 3°C shift in average temperatures.

Precipitation

0mm 25mm 50mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 0mm Feb Precipitation: 0mm Mar Precipitation: 33mm Apr Precipitation: 33mm May Precipitation: 33mm Jun Precipitation: 2mm Jul Precipitation: 19mm Aug Precipitation: 33mm Sep Precipitation: 33mm Oct Precipitation: 33mm Nov Precipitation: 33mm Dec Precipitation: 14mm
Precipitation

Bonnievale is a quite dry location, receiving approximately 264mm of precipitation annually, which averages out to around 22mm per month. The wettest month is March, averaging 33mm of rainfall. April and May also tend to see above-average precipitation. The driest month is January, with just 0mm. That's 33mm less than March, 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.

Wind

0km/h 5km/h 10km/h 15km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 4km/h Feb Wind Speed: 5km/h Mar Wind Speed: 5km/h Apr Wind Speed: 6km/h May Wind Speed: 5km/h Jun Wind Speed: 6km/h Jul Wind Speed: 10km/h Aug Wind Speed: 9km/h Sep Wind Speed: 11km/h Oct Wind Speed: 11km/h Nov Wind Speed: 9km/h Dec Wind Speed: 11km/h
Wind Speed

Bonnievale is relatively calm, with an average annual wind speed of 8km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 11km/h, though still comfortable for most outdoor activities. The calmest conditions occur in January, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 7km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.

Seasons

Winter
Dec 21
Spring
Sep 23
Summer
Dec 21
Autumn
Mar 20

16 days until Spring

It is currently winter in Bonnievale, which began on June 21, 2026. Bonnievale 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 January at around 16°C, while the coldest stretch bottoms out in May near 2°C. Spring is next, beginning on September 23, 2026 — 16 days from now.

Spring

Temperatures range from 5 to 9°C. Rainfall is relatively light, with around 98mm over the season and a monthly average of 33mm. Winds are generally light, averaging 10km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.

Summer

Temperatures range from 2 to 16°C. Precipitation is minimal, with only around 14mm for the entire season. Winds are generally light, averaging 6km/h. Comfortable clothing with a light layer for cooler evenings is all you need.

Autumn

Temperatures range from 2 to 8°C. Rainfall is relatively light, with around 98mm over the season and a monthly average of 33mm. Winds are generally light, averaging 5km/h. Layered clothing works best as temperatures gradually cool — enjoy the crisp air and changing scenery.

Winter

Temperatures range from 3 to 6°C. Rainfall is relatively light, with around 53mm over the season and a monthly average of 18mm. Winds are generally light, averaging 8km/h. A warm coat and layers are recommended, especially for early mornings and evenings.

Monthly Climate Data

The table below shows monthly climate averages for Bonnievale 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.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
3 °C
16 °C
4 km/h
0 mm
0 cm
Feb
2 °C
11 °C
5 km/h
0 mm
0 cm
Mar
4 °C
8 °C
5 km/h
33 mm
0 cm
Apr
2 °C
6 °C
6 km/h
33 mm
0 cm
May
2 °C
6 °C
5 km/h
33 mm
0 cm
Jun
3 °C
4 °C
6 km/h
2 mm
0 cm
Jul
3 °C
4 °C
10 km/h
19 mm
0 cm
Aug
3 °C
6 °C
9 km/h
33 mm
0 cm
Sep Current
5 °C
9 °C
11 km/h
33 mm
0 cm
Oct
7 °C
8 °C
11 km/h
33 mm
0 cm
Nov
7 °C
8 °C
9 km/h
33 mm
0 cm
Dec
7 °C
8 °C
11 km/h
14 mm
0 cm
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Metric (°C, km/h)