St James Weather in December

St James in December averages 21°C (70°F) during the day and 17°C (63°F) at night. Some rainfall is typical for this time of year.

Rainfall in St James in December

The climate data from previous years indicates about 6 days of rain, averaging 20 mm (0.8 in) for the month. When rain does fall, showers tend to be light and brief. Most days will be dry.

Temperature in St James in December

St James has perfect weather in December, with days reaching 21°C (70°F) and nights cooling to 17°C (63°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. With overnight lows of 17°C (63°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in St James in December

Expect a lot of sunshine this month, with about 334 hours of sun. These sunny conditions add to the overall experience.

Wind Speed in St James in December

Wind speeds average 5 m/s (10 knots) during December. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.

Average water temperature in December

The water temperature is 18°C (64°F). It's not warm, but most people find it perfectly fine for a swim once they're in.

If you're inclined towards comfortable temperatures and drier conditions, December is a good time to visit St James.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit South Africa, check out our St James's climate page.

St James Temperature in December

Min Temperature 17°C (63°F)  

Max Temperature 21°C (70°F)  

Water Temperature 18°C (64°F) *  

Chance of Rain 21%  

Precipitation 20 mm (0.8 in)  

Rainy days 6 days  

Humidity 71% *  

Windspeed 5 m/s (10 knots) *  

Sunshine 334 hours *  

Percentage Sunshine *  

* Data from: Cape Town, South Africa (21 KM, 13 Miles).

What to Wear in St James in December

For St James in December, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Some rain is possible, so pack something to handle light showers. With water temperatures around 18°C (64°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.

What To Do in St James in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Cycling

10/10

Walking

10/10

Barbeque

9/10

Camping

10/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit South Africa, check out our St James's climate page.

More climate data for St James

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full St James climate overview or explore weather in South Africa.