Cape Town
South Africa
Long-term weather forecast
Long-term weather forecast

March weather forecast and climate
Cape Town, South Africa

An aerial view of Cape Town, South Africa, with the surrounding calm clear waters and several mountains
An aerial view of Cape Town, South Africa, with the surrounding calm clear waters and several mountains
March, the first month of the autumn, in Cape Town, is also a moderately hot month, with average temperature ranging between min 14.2°C (57.6°F) and max 25.4°C (77.7°F).

Temperature

In Cape Town, the average high-temperature in March is almost the same as in February - a still warm 25.4°C (77.7°F). In Cape Town, South Africa, the average low-temperature is 14.2°C (57.6°F).

Humidity

In March, the average relative humidity in Cape Town is 74%.

Rainfall

In Cape Town, it is raining for 4.8 days, with typically 20mm (0.8") of accumulated precipitation. Throughout the year, there are 103.7 rainfall days, and 515mm (20.3") of precipitation is accumulated.

Sea temperature

In March, the average sea temperature is 18.3°C (64.9°F).
Note: For swimming, a surface water temperature of 18.3°C (64.9°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

Daylight

In Cape Town, the average length of the day in March is 12.3h.

Sunshine

The average sunshine in March is 9.4h.

UV index

The average daily maximum UV index in Cape Town is 9. A UV Index value of 8 to 10 symbolizes a very high health vulnerability from unsafe exposure to the UV radiation for the ordinary person.
Note: The average daily UV index of 9 in March transform into the following instructions:
Take special precautions, as unprotected eyes and skin can be burned and damaged quickly. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.

What is the temperature in March in Cape Town?

In Cape Town, South Africa, in March, the average high-temperature is 25.4°C (77.7°F), and the average low-temperature is 14.2°C (57.6°F).

What is the average humidity in March in Cape Town?

In Cape Town, the average relative humidity in March is 74%.

How much does it rain in Cape Town in March?

In Cape Town, South Africa, during March, the rain falls for 4.8 days and regularly aggregates up to 20mm (0.8") of precipitation.

How cold is the water in March in Cape Town?

In Cape Town, in March, the average water temperature is 18.3°C (64.9°F). Swimming in 18.3°C (64.9°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).

What is the average length of the day in March in Cape Town?

In March, the average length of the day in Cape Town, South Africa, is 12.3h.

How long on average sun shines in March in Cape Town?

The average sunshine in March is 9.4h.

What is the UV index reading in March in Cape Town?

In March, the average daily maximum UV index in Cape Town is 9. A UV Index reading of 8 to 10 represents a very high health threat from unsafe exposure to the Sun's UV rays.
Average temperature in March - Cape Town, South Africa
  • Average high temperature in March: 25.4°C

The warmest month (with the highest average high temperature) is February (26.5°C).
The month with the lowest average high temperature is July (17.5°C).

  • Average low temperature in March: 14.2°C

The month with the highest average low temperature is January (15.7°C).
The coldest month (with the lowest average low temperature) is July (7°C).

Average humidity in March - Cape Town, South Africa
  • Average humidity in March: 74%

Months with the highest relative humidity are May, June and July (81%).
Months with the lowest relative humidity are January, November and December (71%).

Average rainfall in March - Cape Town, South Africa
  • Average rainfall in March: 20mm

The wettest month (with the highest rainfall) is June (93mm).
The driest month (with the lowest rainfall) is November (14mm).

Average rainfall days in March - Cape Town, South Africa
  • Average rainfall days in March: 4.8 days

The month with the highest number of rainy days is August (13.7 days).
The month with the lowest number of rainy days is February (4.6 days).

Average sea temperature in March - Cape Town, South Africa
  • Average sea temperature in March: 18.3°C

The best month for swimming (with the highest average sea temperature) is January (18.5°C).
Coldest months (with the lowest average sea temperature) are July, August and September (15.3°C).

Average daylight in March / Average sunshine in March - Cape Town, South Africa
  • Average daylight in March: 12.3h

The month with the longest days is December (Average daylight: 14.4h).
The month with shortest days is June (Average daylight: 9.9h).

  • Average sunshine in March: 9.4h

The month with most sunshine is January (Average sunshine: 10.9h).
The month with least sunshine is June (Average sunshine: 5.8h).

Average UV index in March - Cape Town, South Africa
  • Average UV index in March: 9

Months with the highest UV index are January and December (UV index 12).
Months with the lowest UV index are June and July (UV index 3).