Temperatures in January
It's cold in January in Belfast with an average temperature of 8°C. Temperatures this month range from a low of 6°C to a high of 10°C. At night, you can expect temperatures between 2°C and 5°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Belfast in January. The red line indicates the max temperatures, and the blue line shows the minimums.
Start of January
The month of January starts in Belfast with cold temperatures, averaging around 9°C during the day and nights close to 4°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Mid-January
By mid-January, the average daytime temperature drops to around 7°C, with nights close to 3°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
End of January
By the end of January, the average daytime temperature in Belfast will be around 9°C, with nights close to 4°C. A shower might show up, but overall the weather will be dry and sunny.
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Precipitation in January
In January, there is an average of 91 mm of precipitation, spread over 18 days. Of the total precipitation, about 0,9 cm falls as snow in January. The wind speed is around 4 Bft, mostly coming from the Southwest.
Across the whole month, the average precipitation chance is 58% per day. Though that seems frequent, the weather’s variable. Some days have high and others have lower precipitation chances.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in January for Belfast. 0% means it never rained on that day in the past 10 years, and 100% means it rained every day. All values in between represent the average chance of precipitation on that day.
Belfast in January |
London | ||
|---|---|---|---|
 Average Temperature |
8°C | 8°C | |
 High Temp |
10°C | 9°C | |
| Low Temp |
6°C | 6°C | |
 Total Precipitation |
91 mm | 58 mm | |
| Rainy Days |
18 days | 9 days | |
 Total Snowfall |
0,9 cm | 0,8 cm | |
| Snowy Days |
1 day | 1 day | |
December
UV index
The UV index is a maximum of 2 this month. That's a low value on the intensity scale of 1 to 11. The risk of sunburn is minimal at this time.
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Daily Temperature in January in Belfast
This chart shows the average daily temperatures, both day and night, for each day in January in Belfast, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in January in Belfast
The chart below shows the average daily precipitation in January for Belfast, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for January, you can expect around 18 days of rain in Belfast.
Daily Snowfall in January in Belfast
This chart shows the average daily snowfall in January in Belfast, measured in centimetres. The bottom of the chart shows the days of the month. The data is based on historical measurements and gives an idea of the average snowfall in January.
Daily UV Index in January in Belfast
This chart shows the average daily UV index in January in Belfast, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in January in Belfast Over the Years
This chart shows the average temperature in January in Belfast, measured in degrees Celsius, over the past years.
Total Precipitation in January in Belfast Over the Years
This chart shows the average precipitation in January in Belfast, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Snowfall in January in Belfast per year
This chart shows the average snowfall in January in Belfast, measured in centimetres, over the past years.
Daily climate in January for Belfast
Click on a specific day in January for detailed info on the typical weather on that day in Belfast. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in January in Belfast
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Average Weather in Belfast by Month
Click on a month below to see detailed weather info for Belfast. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
