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
Temperature readings reach their annual highs in January, averaging 7.1°C (44.8°F) and a minimum average of 1.8°C (35.2°F).Humidity
The average relative humidity in January in Castlewarren is 91%.Rainfall
In Castlewarren, Ireland, during January, the rain falls for 16.5 days and regularly aggregates up to 39mm (1.54") of precipitation. In Castlewarren, during the entire year, the rain falls for 217.1 days and collects up to 563mm (22.17") of precipitation.Snowfall
January through March, November and December are months with snowfall. In Castlewarren, in January, snow falls for 1.8 days, with typically accumulated 13mm (0.51") of snow. Throughout the year, there are 6.7 snowfall days, and 48mm (1.89") of snow is accumulated.Daylight
In January, the average length of the day in Castlewarren, Ireland, is 8h and 17min.On the first day of January, sunrise is at 8:39 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 8:12 am and sunset at 5:10 pm GMT.
Sunshine
The average sunshine in January is 3.9h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In January, the maximum UV index of 2 suggests these recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month in Castlewarren?
What are the temperatures in Castlewarren in January?
What is the average humidity in January in Castlewarren?
How much does it rain in Castlewarren in January?
How many days does it snow in January in Castlewarren?
How many hours of daylight does Castlewarren have in January?
What time are sunrise and sunset in January in Castlewarren?
How many hours of sunshine does Castlewarren have in January?
What are the months with the lowest UV index in Castlewarren?
What is the UV index intensity in January in Castlewarren?
Average temperature in January
Castlewarren, Ireland
- Average high temperature in January: 7.1°C
The warmest month (with the highest average high temperature) is July (17.9°C).
The month with the lowest average high temperature is January (7.1°C).
- Average low temperature in January: 1.8°C
The month with the highest average low temperature is July (10.6°C).
The coldest months (with the lowest average low temperature) are January, February and March (1.8°C).
Average pressure in January
Castlewarren, Ireland
- Average pressure in January: 1012mbar
The month with the highest atmospheric pressure is May (1016.2mbar).
The month with the lowest atmospheric pressure is November (1008.6mbar).
Average wind speed in January
Castlewarren, Ireland
- Average wind speed in January: 18.3km/h
The windiest month (with the highest average wind speed) is February (18.6km/h).
The calmest month (with the lowest average wind speed) is July (12.6km/h).
Average humidity in January
Castlewarren, Ireland
- Average humidity in January: 91%
The months with the highest relative humidity are November and December (92%).
The month with the lowest relative humidity is April (86%).
Average rainfall in January
Castlewarren, Ireland
- Average rainfall in January: 39mm
The wettest month (with the highest rainfall) is November (70mm).
The driest months (with the least rainfall) are March, May and September (37mm).
Average rainfall days in January
Castlewarren, Ireland
- Average rainfall days in January: 16.5 days
The month with the highest number of rainy days is July (22.5 days).
The month with the least rainy days is November (15.6 days).
Average snowfall in January
Castlewarren, Ireland
- Average snowfall in January: 13mm
The month with the highest snowfall is February (14mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in January
Castlewarren, Ireland
- Average snowfall days in January: 1.8 days
The month with the highest number of snowfall days is February (2 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in January /
Average sunshine in January
Castlewarren, Ireland
- Average daylight in January: 8h and 2min
The month with the longest days is June (Average daylight: 16h and 48min).
The month with the shortest days is December (Average daylight: 7h and 42min).
- Average sunshine in January: 3h and 5min
The months with the most sunshine are April and May (Average sunshine: 6h and 6min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in January
Castlewarren, Ireland
- Average sunshine days in January: 10.9 days
The month with the most sunshine days is November (11.1 days).
The month with the least sunshine days is August (4.1 days).
Average UV index in January
Castlewarren, Ireland
- Average UV index in January: 2
The months with the highest UV index are June and August (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in January
Castlewarren, Ireland
- Average cloud cover in January: 61
The month with the most cloud cover is July (Cloud cover 69).
The months with the least cloud cover are March and April (Cloud cover 59).
Average visibility in January
Castlewarren, Ireland
- Average visibility in January: 8km
The months with the highest visibility are January, February, March, April, May, June, October, November and December (8km).
The months with the lowest visibility are July, August and September (7km).
