Temperatures in January
It's cold in January in Portstewart 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 6°C.
Max and Min Temperatures per Day
This chart shows the daily maximum and minimum temperatures in degrees Celsius for Portstewart 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 Portstewart with cold temperatures, averaging around 9°C during the day and nights close to 5°C. You can expect regular precipitation, but there’s also a chance for some sunny days in the first days of the month. Wear a thick coat, jumper, and long trousers.
Mid-January
By mid-January, the average daytime temperature drops to around 7°C, with nights close to 4°C. During this part of the month, you can expect regular precipitation, but there’ll also be some sunny days.
End of January
By the end of January, the average daytime temperature in Portstewart will be around 9°C, with nights close to 5°C. A shower might show up, but overall the weather will be dry and sunny. Wear a thick coat, jumper, and long trousers.
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Precipitation in January
In January, there is an average of 103 mm of precipitation, spread over 20 days. Of the total precipitation, about 1,3 cm falls as snow in January. The wind speed is around 5 Bft, mostly coming from the Southwest.
The average precipitation chance this month is 65% per day. Though that seems frequent, there are also a few days with lower precipitation chances.
Precipitation Chance
This chart shows the daily precipitation chance (in percentages) in January for Portstewart. 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.
Portstewart in January |
London | ||
|---|---|---|---|
 Average Temperature |
8°C | 8°C | |
 High Temp |
10°C | 9°C | |
| Low Temp |
6°C | 6°C | |
 Total Precipitation |
103 mm | 58 mm | |
| Rainy Days |
20 days | 9 days | |
 Total Snowfall |
1,3 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.
Is January a good time to visit Portstewart?
After some sun? Then January isn’t the best time to be in Portstewart. There’s too much chance of rain this month.
Temperature records for Portstewart in January
With 15°C, Portstewart hit the highest temperature in the last 10 years in January 2020. The lowest daytime temperature in this month was 1°C in 2019. The extreme night temperatures ranged from a low of -5°C to a high of 12°C.
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Daily Temperature in January in Portstewart
This chart shows the average daily temperatures, both day and night, for each day in January in Portstewart, 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 Portstewart
The chart below shows the average daily precipitation in January for Portstewart, 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 20 days of rain in Portstewart.
Daily Snowfall in January in Portstewart
This chart shows the average daily snowfall in January in Portstewart, 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 Portstewart
This chart shows the average daily UV index in January in Portstewart, 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 Portstewart Over the Years
This chart shows the average temperature in January in Portstewart, measured in degrees Celsius, over the past years.
Total Precipitation in January in Portstewart Over the Years
This chart shows the average precipitation in January in Portstewart, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Snowfall in January in Portstewart per year
This chart shows the average snowfall in January in Portstewart, measured in centimetres, over the past years.
Daily climate in January for Portstewart
Click on a specific day in January for detailed info on the typical weather on that day in Portstewart. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in January in Portstewart
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Average Weather in Portstewart by Month
Click on a month below to see detailed weather info for Portstewart. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
Or check out the climate of Portstewart for all months at once
