Contents
- Weather in January
- Frequently asked questions
- Average temperature in January
- Average pressure in January
- Average wind speed in January
- Average humidity in January
- Average rainfall in January
- Average rainfall days in January
- Average sea temperature in January
- Average daylight in January
- Average sunshine in January
- Average sunshine days in January
- Average UV index in January
- Average cloud cover in January
- Average visibility in January
Weather in January
Temperature
At the start of January, Hermanus's average high-temperature reaches a still pleasant 22.9°C (73.2°F), subtly different from the preceding month. During January, Hermanus's temperature shows a minor deviation from daytime highs, falling to a steady low-temperature average of 18°C (64.4°F).Humidity
January through March, May, September and October, with an average relative humidity of 76%, are the most humid months in Hermanus.Rainfall
In Hermanus, South Africa, in January, it is raining for 10.8 days, with typically 18mm (0.71") of accumulated precipitation. In Hermanus, during the entire year, the rain falls for 113.9 days and collects up to 270mm (10.63") of precipitation.Sea temperature
The month with the warmest seawater in Hermanus is January, with an average sea temperature of 20°C (68°F).Note: Most people do not find swimming enjoyable in water of 20°C (68°F). The task of controlling breathing becomes tougher as the temperature drops from 21°C (69.8°F) to 15°C (59°F).
Daylight
The average length of the day in January is 14h and 9min.On the first day of January, sunrise is at 05:33 and sunset at 19:58. On the last day of the month, sunrise is at 06:02 and sunset at 19:50 SAST.
Sunshine
In Hermanus, the average sunshine in January is 10h.UV index
The months with the highest UV index in Hermanus are January and February, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: In January, the maximum UV index of 6 suggests this advice:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Limit your exposure to the sun's UV radiation, which is strongest between 10 a.m. and 4 p.m., and note that parasols or canopies may not provide full sun protection. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage.
Frequently asked questions
What is the average January temperature in Hermanus?
What are the most humid months in Hermanus?
What is the average humidity in January in Hermanus?
How much does it rain in Hermanus in January?
What month is the sea warmest in Hermanus?
What is the sea temperature in January in Hermanus?
What is the average length of the day in January in Hermanus?
When are sunrise and sunset in January in Hermanus?
How long on average sun shines in January in Hermanus?
What is the month with the highest UV index in Hermanus?
What is the UV index reading in January in Hermanus?
Average temperature in January
Hermanus, South Africa
- Average high temperature in January: 22.9°C
The warmest month (with the highest average high temperature) is February (23.3°C).
The month with the lowest average high temperature is August (16.2°C).
- Average low temperature in January: 18°C
The month with the highest average low temperature is February (18.3°C).
The coldest month (with the lowest average low temperature) is August (11.5°C).
Average pressure in January
Hermanus, South Africa
- Average pressure in January: 1014mbar
The month with the highest atmospheric pressure is July (1021.8mbar).
The month with the lowest atmospheric pressure is February (1013.8mbar).
Average wind speed in January
Hermanus, South Africa
- Average wind speed in January: 20.5km/h
The windiest month (with the highest average wind speed) is November (21.5km/h).
The calmest month (with the lowest average wind speed) is May (17.7km/h).
Average humidity in January
Hermanus, South Africa
- Average humidity in January: 76%
The months with the highest relative humidity are January, February, March, May, September and October (76%).
The months with the lowest relative humidity are April, June and July (74%).
Average rainfall in January
Hermanus, South Africa
- Average rainfall in January: 18mm
The wettest month (with the highest rainfall) is June (47mm).
The driest months (with the least rainfall) are February and December (13mm).
Average rainfall days in January
Hermanus, South Africa
- Average rainfall days in January: 10.8 days
The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is October (7.1 days).
Average sea temperature in January
Hermanus, South Africa
- Average sea temperature in January: 20°C
The best month for swimming (with the highest average sea temperature) is January (20°C).
The coldest month (with the lowest average sea temperature) is August (15.4°C).
Average daylight in January /
Average sunshine in January
Hermanus, South Africa
- Average daylight in January: 14h and 1min
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: 10h and 0min
The month with the most sunshine is December (Average sunshine: 10h and 24min).
The month with the least sunshine is June (Average sunshine: 6h and 12min).
Average sunshine days in January
Hermanus, South Africa
- Average sunshine days in January: 15.4 days
The month with the most sunshine days is October (22 days).
The month with the least sunshine days is February (13.9 days).
Average UV index in January
Hermanus, South Africa
- Average UV index in January: 6
The months with the highest UV index are January and February (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
Hermanus, South Africa
- Average cloud cover in January: 32
The months with the most cloud cover are March and October (Cloud cover 33).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in January
Hermanus, 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).
Hermanus, South Africa
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