What’s the climate like in Portstewart?
The current climate in Portstewart features temperatures ranging from a high of 18°C to a low of 8°C throughout the year. The average yearly temperature is around 13°C. At night, temperatures in the colder months average around 3°C and in the warmer months around 12°C.
The highest temperature recorded in Portstewart in recent years was 26°C in July 2021. The lowest daytime temperature recorded was -1°C in February 2018.
On average, Portstewart gets 1016 mm of precipitation each year. Of this, about 5,5 cm is snowfall. For comparison, New York gets 1142 mm of precipitation each year.
Best time to visit Portstewart?
The best time to visit Portstewart for mild to warm weather is June up to September. You might get some rain, but the temperatures are just right to explore Portstewart.
Climate Table of Portstewart
The climate table of Portstewart shows the average temperatures, rainfall, snow, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 8 | 8 | 10 | 12 | 14 | 17 | 18 | 18 | 16 | 13 | 10 | 9 |
| Temp. min (°C) | 4 | 4 | 4 | 6 | 8 | 11 | 12 | 12 | 11 | 9 | 6 | 5 |
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| Precipitation (mm) | 103 | 97 | 78 | 48 | 63 | 61 | 87 | 91 | 76 | 94 | 110 | 108 |
| Snow (cm) | 1,3 | 2,4 | 1,4 | 0,1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0,3 |
| UV Index | 1 | 2 | 3 | 5 | 5 | 5 | 5 | 5 | 4 | 2 | 1 | 1 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
- Average yearly temperature: 13°C
- Highest temperature: 18°C in July and August
- Lowest temperature: 8°C in January and February
- Precipitation*: 1016 mm per year, averaging 85 mm per month
- Snowfall: 5,5 cm per year
- Driest months: 48 mm in April, 61 mm in June and 63 mm in May
- Wettest months: 110 mm in November, 108 mm in December and 103 mm in January
*Precipitation is measured as a combination of rain, snow, and hail
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Table of Contents
Average Temperature per Month in Portstewart
This graph shows the average maximum temperatures per month in Portstewart, Northern Ireland. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Portstewart
This graph shows how much rainfall Portstewart, Northern Ireland, gets on average per month. Rainfall is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of rainfall is measured in millimeters, and the average is calculated based on the recorded rainfall per month from past years.
Average Snowfall per Month in Portstewart
This graph shows how much snow Portstewart, Northern Ireland, gets on average per month. The amount of snowfall is measured in centimeters and the average is calculated based on the recorded snowfall per month from past years.
Average UV Index per Month in Portstewart
This graph shows the average UV index per month in Portstewart, Northern Ireland. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Yearly Temperature in Portstewart
This graph shows the average yearly temperature in Portstewart, Northern Ireland. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Portstewart
This chart shows the total yearly precipitation in Portstewart, Northern Ireland, over the past few years. The total yearly precipitation, measured in millimeters, is the sum of all the rain that fell in the twelve months of that year.
Total Yearly Snowfall in Portstewart
This chart shows the total yearly snowfall in Portstewart, Northern Ireland, over the past few years. The total yearly snowfall, measured in centimeters, is the sum of all the snow that fell in the twelve months of that year.
Weather experiences 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.
