Portnoo Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Portnoo.
Climate overview of Portnoo
Portnoo, Ireland, experiences moderate temperature changes through the seasons. August is the warmest month with daytime highs of 18°C (64°F), while February is the coolest at 9°C (48°F).
With around 1656 mm (65 in) of annual rainfall, Portnoo has a notably wet climate. The wettest month is December.
Portnoo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Portnoo — and find the best time to visit.
Monthly Temperature in Portnoo
The weather in Portnoo changes moderately throughout the year, offering enough variation to appreciate each season. Average daytime temperatures reach a moderate 18°C (64°F) in August. In February, the coolest month of the year, temperatures drop to a chilly 9°C (48°F).
At night, temperatures range from around 13°C (55°F) in August to 5°C (41°F) in February.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Portnoo
Portnoo has a relatively rainy climate with high precipitation levels, averaging 1656 mm (65 in) of rainfall annually. Portnoo experiences moderate seasonal variation in rainfall, with monthly averages ranging from 176 mm (6.9 in) in December, the wettest month, and 100 mm (3.9 in) in April, the driest month. For more details, please visit our Portnoo Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Portnoo
Rainfall during this time ranges from 125 mm (4.9 in) in July to 138 mm (5.4 in) in August. This means you can expect a mix of sunny days and occasional showers.
The rainy season falls during January, October, November and December, bringing heavy precipitation. Planning your next adventure but unsure where to go? Our climate tool suggests perfect locations tailored to your preferred weather conditions. Discover your ideal travel destination with our weather planner.
Frequently asked questions about the climate in Portnoo
What is the best time to visit Portnoo?
August typically offers the most optimal weather in Portnoo. In contrast, January, February, March, April, November and December tend to have less optimal conditions.
What temperatures can I expect in Portnoo?
Daytime highs range from 9°C (48°F) in February to 18°C (64°F) in August. Nighttime lows range from 5°C (41°F) to 13°C (55°F).
How much rain does Portnoo get?
Annual rainfall is around 1656 mm (65 in). December is the wettest month with 176 mm (6.9 in), while April is the driest with 100 mm (3.9 in).
Portnoo 3-Day Forecast
Portnoo 3-Day Forecast
Portnoo on the map
Portnoo is highlighted — select any city to see its climate.
Popular this month
Where to go in July — average daytime high across popular destinations.
Cork
19°C (66°F) Kilkenny
20°C (68°F) Dublin20°C (68°F) Kenmare
19°C (66°F) Galway20°C (68°F) Killarney19°C (66°F) Westport19°C (66°F) Doolin18°C (64°F) 
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