January weather forecastCape Town, South Africa
January
Weather in January
In this commencement of the year, Cape Town experiences peak summer conditions. The sea around this coastal city remains at a perfect 18.5°C (65.3°F) easing access to a variety of water activities. Most days in January are sunny, attributing to high temperatures and minimum rainfall. Visitors and locals alike can fully plunge into outdoor activities due to the predominant clear skies and moderate humidity. Comparatively, the heat and sunshine noticeably slightly drop by the end of the month to transition into February.Temperature
Cape Town signifies an average high-temperature of a still warm 25.8°C (78.4°F) in January, closely mirroring the 24.3°C (75.7°F) of December. In Cape Town, the January nights cool down to an average low of 17.7°C (63.9°F).Humidity
The average relative humidity in January is 69%.Rainfall
In January, the rain falls for 6.7 days. Throughout January, 9mm (0.35") of precipitation is accumulated. Throughout the year, in Cape Town, there are 111 rainfall days, and 435mm (17.13") of precipitation is accumulated.Sea temperature
The month with the warmest seawater in Cape Town is January, with an average sea temperature of 18.5°C (65.3°F).Note: Swimming is not a pleasant activity for most when the water temperature is 18.5°C (65.3°F). As the water temperature drops from 21°C (69.8°F) to 15°C (59°F), breathing becomes more difficult to control.
Daylight
In Cape Town, South Africa, the average length of the day in January is 14h and 7min.On the first day of the month, sunrise is at 05:38 and sunset at 20:00. On the last day of January, sunrise is at 06:06 and sunset at 19:52 SAST.
Sunshine
In Cape Town, the average sunshine in January is 11h.UV index
The months with the highest UV index are January, February and December, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A maximum high daily UV index of 6 during January translates into the following directions:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Cape Town, South Africa
- Average high temperature in January: 25.8°C
The warmest month (with the highest average high temperature) is February (26.1°C).
The month with the lowest average high temperature is August (16.6°C).
- Average low temperature in January: 17.7°C
The month with the highest average low temperature is January (17.7°C).
The coldest months (with the lowest average low temperature) are July and August (10.2°C).
Average pressure in January
Cape Town, South Africa
- Average pressure in January: 1013.6mbar
The month with the highest atmospheric pressure is July (1022mbar).
The month with the lowest atmospheric pressure is February (1013.4mbar).
Average wind speed in January
Cape Town, South Africa
- Average wind speed in January: 17.6km/h
The windiest month (with the highest average wind speed) is January (17.6km/h).
The calmest month (with the lowest average wind speed) is May (13.4km/h).
Average humidity in January
Cape Town, South Africa
- Average humidity in January: 69%
The months with the highest relative humidity are June, August and September (74%).
The months with the lowest relative humidity are February, April and December (68%).
Average rainfall in January
Cape Town, South Africa
- Average rainfall in January: 9mm
The wettest month (with the highest rainfall) is June (98mm).
The driest month (with the least rainfall) is February (7mm).
Average rainfall days in January
Cape Town, South Africa
- Average rainfall days in January: 6.7 days
The month with the highest number of rainy days is June (13.8 days).
The month with the least rainy days is February (4.9 days).
Average sea temperature in January
Cape Town, South Africa
- Average sea temperature in January: 18.5°C
The best month for swimming (with the highest average sea temperature) is January (18.5°C).
The coldest months (with the lowest average sea temperature) are July, August and September (15.3°C).
Average daylight in January /
Average sunshine in January
Cape Town, South Africa
- Average daylight in January: 14h and 6min
The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).
- Average sunshine in January: 11h and 0min
The month with the most sunshine is December (Average sunshine: 11h and 6min).
The month with the least sunshine is June (Average sunshine: 6h and 0min).
Average sunshine days in January
Cape Town, South Africa
- Average sunshine days in January: 23.1 days
The month with the most sunshine days is January (23.1 days).
The month with the least sunshine days is June (14.6 days).
Average UV index in January
Cape Town, South Africa
- Average UV index in January: 6
The months with the highest UV index are January, February and December (UV index 6).
The months with the lowest UV index are May, June, July, August and September (UV index 4).
Average cloud cover in January
Cape Town, South Africa
- Average cloud cover in January: 17
The month with the most cloud cover is June (Cloud cover 34).
The month with the least cloud cover is February (Cloud cover 15).
Average visibility in January
Cape Town, South Africa
- Average visibility in January: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
