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
January
Weather in January
Temperature
January and February bring Port Saint Johns's highest average temperatures, reaching a high of 78.4°F.Humidity
In Port Saint Johns, South Africa, the average relative humidity in January is 82%.Rainfall
January is the month with the most rainfall in Port Saint Johns. Rain falls for 22.9 days and accumulates 3.66" of precipitation.Sea temperature
In January, the average sea temperature is 78.6°F.Note: In water activities such as swimming and diving, temperatures from 77°F to 84.2°F are deemed highly pleasurable for extended periods without any unease.
Daylight
The average length of the day in January in Port Saint Johns is 13h and 56min.On the first day of January in Port Saint Johns, sunrise is at 04:59 and sunset at 19:10. On the last day of the month, sunrise is at 05:26 and sunset at 19:04 SAST.
Sunshine
In Port Saint Johns, the average sunshine in January is 7.5h.UV index
The months with the highest UV index in Port Saint Johns are January through April, August, November and December, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In January, a daily maximum UV index of 5 leads to the following instructions:
Guard yourself - Precautionary measures against sun damage are advocated. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the hottest in Port Saint Johns?
What are the temperatures in Port Saint Johns in January?
What is the average humidity in January in Port Saint Johns?
What is the wettest month in Port Saint Johns?
How much does it rain in Port Saint Johns in January?
What is the water temperature in January in Port Saint Johns?
How many hours of daylight does Port Saint Johns have in January?
What time are sunrise and sunset in January in Port Saint Johns?
How many hours of sunshine does Port Saint Johns have in January?
When is the highest UV index in Port Saint Johns?
What is the UV index intensity in January in Port Saint Johns?
Average temperature in January
Port Saint Johns, South Africa
- Average high temperature in January: 78.4°F
The warmest months (with the highest average high temperature) are January and February (78.4°F).
The month with the lowest average high temperature is July (66.4°F).
- Average low temperature in January: 59.2°F
The month with the highest average low temperature is February (59.5°F).
The coldest month (with the lowest average low temperature) is July (45°F).
Average pressure in January
Port Saint Johns, South Africa
- Average pressure in January: 29.95"Hg
The month with the highest atmospheric pressure is July (30.22"Hg).
The months with the lowest atmospheric pressure are January and December (29.95"Hg).
Average wind speed in January
Port Saint Johns, South Africa
- Average wind speed in January: 4.4mph
The windiest month (with the highest average wind speed) is August (5.2mph).
The calmest month (with the lowest average wind speed) is March (4mph).
Average humidity in January
Port Saint Johns, South Africa
- Average humidity in January: 82%
The month with the highest relative humidity is February (83%).
The months with the lowest relative humidity are June, July and August (55%).
Average rainfall in January
Port Saint Johns, South Africa
- Average rainfall in January: 3.66"
The wettest month (with the highest rainfall) is January (3.66").
The driest month (with the least rainfall) is June (0.43").
Average rainfall days in January
Port Saint Johns, South Africa
- Average rainfall days in January: 22.9 days
The month with the highest number of rainy days is December (23.5 days).
The month with the least rainy days is June (5 days).
Average sea temperature in January
Port Saint Johns, South Africa
- Average sea temperature in January: 78.7°F
The best month for swimming (with the highest average sea temperature) is March (79.5°F).
The coldest month (with the lowest average sea temperature) is August (69.8°F).
Average daylight in January /
Average sunshine in January
Port Saint Johns, South Africa
- Average daylight in January: 13h and 5min
The month with the longest days is December (Average daylight: 14h and 12min).
The month with the shortest days is June (Average daylight: 10h and 6min).
- Average sunshine in January: 7h and 3min
The month with the most sunshine is October (Average sunshine: 8h and 36min).
The month with the least sunshine is April (Average sunshine: 6h and 12min).
Average sunshine days in January
Port Saint Johns, South Africa
- Average sunshine days in January: 4.4 days
The month with the most sunshine days is July (24.5 days).
The month with the least sunshine days is January (4.4 days).
Average UV index in January
Port Saint Johns, South Africa
- Average UV index in January: 5
The months with the highest UV index are January, February, March, April, August, November and December (UV index 5).
The months with the lowest UV index are May, June, July, September and October (UV index 4).
Average cloud cover in January
Port Saint Johns, South Africa
- Average cloud cover in January: 59
The month with the most cloud cover is December (Cloud cover 60).
The month with the least cloud cover is June (Cloud cover 17).
Average visibility in January
Port Saint Johns, South Africa
- Average visibility in January: 4mi
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February, March, November and December (4mi).
