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Northern IrelandThe weather in January in Portstewart
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.
Looking for sun? January isn’t a good month to be in Portstewart. There’s too much chance of rain this month.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in January for Portstewart, Northern Ireland. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 15°C in 2020, Portstewart reached the highest temperature in January over the past 10 years. The lowest daytime temperature in this month was 1°C in 2019. The extreme nighttime temperatures ranged from a lowest recorded value of -5°C to a highest value of 12°C.
Precipitation and snowfall
In January, there is an average of 103 mm of precipitation, spread over 13 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.
Daily weather in January for Portstewart
Click on any day in January to get detailed info about the usual weather on that day in Portstewart. Check out the historical temperatures and precipitation over the past 10 years on this day.
January weather comparison
| Portstewart | New York | |
|---|---|---|
| Average temperature | 8°C | 5°C |
| Max. temperature | 10°C | 11°C |
| Min. temperature | 2°C | -5°C |
| Total precipitation | 103 mm | 97 mm |
| Rainy days | 13 days | 12 days |
| Total snowfall | 1,3 cm | 16 cm |
| Snowy days | 1 day | 8 days |
Start of January
The month of January starts in Portstewart with cold temps, averaging around 9°C during the day and nights around 5°C.
Mid January
By mid-January, daytime temps drop to around 7°C, with nights around 4°C. During this part of the month, you might see regular precipitation, but there will also be some sunny days.
End of January
By the end of January, the average daytime temperature in Portstewart is around 9°C, while nighttime temps are about 5°C. A shower might pop up, but overall, the weather will be dry and sunny.
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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.
Check out the climate of Portstewart for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in January in Portstewart, Northern Ireland. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in January in Portstewart
Temperature in January in Portstewart over the years
Precipitation charts
These charts show the average amount of precipitation in January in Portstewart, Northern Ireland. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in January in Portstewart
Total precipitation in January in Portstewart over the years
Daily Snowfall in January in Portstewart
Snowfall in January in Portstewart per year
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.
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.