January weather forecastSaint Johns, Guernsey
January weather forecast for Saint Johns, Guernsey: January, like December, is another chilly winter month in Saint Johns, Guernsey, with an average temperature fluctuating between 7.8°C (46°F) and 9.8°C (49.6°F). In Saint Johns, in January, it is raining for 22 days, with typically 63mm (2.48") of accumulated precipitation.
January
Weather in January
January, like December, is another chilly winter month in Saint Johns, Guernsey, with an average temperature fluctuating between 7.8°C (46°F) and 9.8°C (49.6°F).Temperature
The onset of January manifests an average high-temperature of a chilly 9.8°C (49.6°F), demonstrating a minor variation from the preceding month. Saint Johns's evenings during January maintain an average temperature of 7.8°C (46°F), aligning closely with the daytime temperatures.Humidity
The average relative humidity in January is 78%.Rainfall
In Saint Johns, in January, it is raining for 22 days, with typically 63mm (2.48") of accumulated precipitation. In Saint Johns, during the entire year, the rain falls for 196.3 days and collects up to 557mm (21.93") of precipitation.Snowfall
The only month with snowfall is January. The month with the most snowfall is January, when snow falls for 0.3 days and typically aggregates up to 2mm (0.08") of snow.Daylight
The average length of the day in January is 8h and 43min.On the first day of the month, sunrise is at 08:06 and sunset at 16:20. On the last day of January, sunrise is at 07:43 and sunset at 17:03 GMT.
Sunshine
January, November and December, with an average of 3.9h of sunshine, are months with the least sunshine.UV index
In Saint Johns, the average daily maximum UV index in January is 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV rays for the ordinary person.Note: In January, a daily UV index of 3 turns into the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Always opt for UVA and UVB-resistant sunglasses on radiant days. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in January
Saint Johns, Guernsey
- Average high temperature in January: 9.8°C
The warmest month (with the highest average high temperature) is August (17.8°C).
The month with the lowest average high temperature is February (9.2°C).
- Average low temperature in January: 7.8°C
The month with the highest average low temperature is August (15.8°C).
The coldest month (with the lowest average low temperature) is February (7°C).
Average pressure in January
Saint Johns, Guernsey
- Average pressure in January: 1016.1mbar
The month with the highest atmospheric pressure is September (1017.9mbar).
The month with the lowest atmospheric pressure is November (1011.5mbar).
Average wind speed in January
Saint Johns, Guernsey
- Average wind speed in January: 34.1km/h
The windiest month (with the highest average wind speed) is December (36km/h).
The calmest month (with the lowest average wind speed) is July (21.9km/h).
Average humidity in January
Saint Johns, Guernsey
- Average humidity in January: 78%
The months with the highest relative humidity are June and July (84%).
The months with the lowest relative humidity are November and December (77%).
Average rainfall in January
Saint Johns, Guernsey
- Average rainfall in January: 63mm
The wettest month (with the highest rainfall) is November (87mm).
The driest month (with the least rainfall) is July (26mm).
Average rainfall days in January
Saint Johns, Guernsey
- Average rainfall days in January: 22 days
The month with the highest number of rainy days is November (22.8 days).
The month with the least rainy days is June (11.5 days).
Average snowfall in January
Saint Johns, Guernsey
- Average snowfall in January: 2mm
The month with the highest snowfall is January (2mm).
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in January
Saint Johns, Guernsey
- Average snowfall days in January: 0.3 days
The month with the highest number of snowfall days is January (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in January /
Average sunshine in January
Saint Johns, Guernsey
- Average daylight in January: 8h and 42min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 12min).
- Average sunshine in January: 3h and 54min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January, November and December (Average sunshine: 3h and 54min).
Average sunshine days in January
Saint Johns, Guernsey
- Average sunshine days in January: 5.5 days
The month with the most sunshine days is May (16.3 days).
The month with the least sunshine days is November (4 days).
Average UV index in January
Saint Johns, Guernsey
- Average UV index in January: 3
The months with the highest UV index are July, August and September (UV index 5).
The month with the lowest UV index is February (UV index 2).
Average cloud cover in January
Saint Johns, Guernsey
- Average cloud cover in January: 62
The months with the most cloud cover are November and December (Cloud cover 63).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in January
Saint Johns, Guernsey
- 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).
