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 snowfall in January
- Average snowfall days 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, marked by an average high-temperature of 9.8°C (49.6°F) and a low-temperature of 2.3°C (36.1°F), is the coldest month.Humidity
The most humid month is January, with an average relative humidity of 85%.Rainfall
In January, the rain falls for 12.8 days. Throughout January, 56mm (2.2") of precipitation is accumulated. In São Gião, during the entire year, the rain falls for 116.6 days and collects up to 496mm (19.53") of precipitation.Snowfall
Months with snowfall are January through April, October through December. January is the month with the most snowfall. Snow falls for 4.2 days and accumulates 62mm (2.44") of snow.Daylight
In January, the average length of the day in São Gião is 9h and 41min.On the first day of the month, sunrise is at 07:53 and sunset at 17:15. On the last day of January, sunrise is at 07:41 and sunset at 17:47 WET.
Sunshine
The month with the least sunshine is January, with an average of 4.5h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in São Gião. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: In January, a daily maximum UV index of 2 leads to the following instructions:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. 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. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months?
What is the temperature in January?
What is the most humid month?
What is the average humidity in January?
How much does it rain in January?
What is the snowiest month?
How many days does it snow in January?
What is the average length of the day in January in São Gião?
What time are sunrise and sunset in January?
What is the month with the least sunshine?
How many hours of sunshine does São Gião have in January?
When is the lowest UV index?
What is the UV index reading in January?
Average temperature in January
São Gião, Portugal
- Average high temperature in January: 9.8°C
The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (9.8°C).
- Average low temperature in January: 2.3°C
The month with the highest average low temperature is August (14.2°C).
The coldest month (with the lowest average low temperature) is January (2.3°C).
Average pressure in January
São Gião, Portugal
- Average pressure in January: 1022.2mbar
The month with the highest atmospheric pressure is December (1023mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).
Average wind speed in January
São Gião, Portugal
- Average wind speed in January: 10.7km/h
The windiest month (with the highest average wind speed) is February (11.5km/h).
The calmest month (with the lowest average wind speed) is September (8.3km/h).
Average humidity in January
São Gião, Portugal
- Average humidity in January: 85%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (51%).
Average rainfall in January
São Gião, Portugal
- Average rainfall in January: 56mm
The wettest month (with the highest rainfall) is December (83mm).
The driest months (with the least rainfall) are July and August (7mm).
Average rainfall days in January
São Gião, Portugal
- Average rainfall days in January: 12.8 days
The month with the highest number of rainy days is April (16.1 days).
The month with the least rainy days is August (2.5 days).
Average snowfall in January
São Gião, Portugal
- Average snowfall in January: 62mm
The month with the highest snowfall is January (62mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in January
São Gião, Portugal
- Average snowfall days in January: 4.2 days
The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in January /
Average sunshine in January
São Gião, Portugal
- Average daylight in January: 9h and 4min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January: 4h and 3min
The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in January
São Gião, Portugal
- Average sunshine days in January: 15 days
The month with the most sunshine days is August (27.5 days).
The month with the least sunshine days is April (12.7 days).
Average UV index in January
São Gião, Portugal
- Average UV index in January: 2
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in January
São Gião, Portugal
- Average cloud cover in January: 52
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 12).
Average visibility in January
São Gião, Portugal
- Average visibility in January: 7km
The months with the highest visibility are July and August (10km).
The month with the lowest visibility is January (7km).
