Somerset West Weather in September
September in Somerset West brings pleasant temperatures around 18°C (64°F) during the day, dropping to 10°C (50°F) at night, with quite a bit of rainfall expected, averaging around 70 mm (2.8 in) for the month.
Rainfall in Somerset West in September
On average, there are about 10 days with rain during this month, averaging 70 mm (2.8 in). Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.
Temperature in Somerset West in September
Expect highs of 18°C (64°F) in Somerset West in September, with nights dropping to around 10°C (50°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. At 10°C (50°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Somerset West in September
There are approximately 225 hours of sunshine this month, resulting in mostly clear days.For Somerset West itself, January, February, March, April, May, October, November and December generally stand out with the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Africa, check out our Somerset West's climate page.
Somerset West Temperature in September
Min Temperature
10°C (50°F)
Max Temperature
18°C (64°F)
Chance of Rain
34%
Precipitation
70 mm (2.8 in)
Rainy days
10 days
Humidity
77% *
Sunshine
225 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Somerset West typically stay consistent throughout September, with daily highs averaging around 18°C (64°F). Nights are cool, with lows around 10°C (50°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Somerset West in September
Browse day-by-day weather records for Somerset West spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Somerset West historical weather extremes in September
Our historical data for Somerset West spans 1976 to 2025, revealing these weather extremes.
- Somerset West recorded its highest September temperature of 33°C (91°F) on September 12, 1997.
- The coldest September day was on September 20, 2013, with a maximum of 12°C (54°F).
- Nighttime temperatures dropped to 2°C (36°F) on September 1, 1990, marking the coldest September night on record.
- The wettest September day on record brought 49 mm (1.9 in) of precipitation to Somerset West (September 8, 2008).
Best Places in South Africa in September
Find out more about the weather in South Africa and which places have the best travel conditions in this month. See all of South Africa in September →
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What to Wear in Somerset West in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Somerset West in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit South Africa, check out our Somerset West's climate page.
Temperature Rainfall Sunshine Humidity
See the full Somerset West climate overview or explore weather in South Africa.
