Roundstone Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Roundstone.
Climate overview of Roundstone
The climate in Roundstone, Galway County, Ireland, sees a moderate range of temperatures across the year, from 18°C (64°F) in August down to 10°C (50°F) in January.
Rainfall is high, totalling around 1588 mm (63 in) per year. November is the wettest month and April the driest. May is the sunniest month, averaging 5.2 hours of sunshine per day.
Roundstone Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Roundstone - and find the best time to visit.
Monthly Temperature in Roundstone
The climate in Roundstone experiences moderate temperature changes, with mild shifts between seasons. Average maximum daytime temperatures range from a moderate 18°C (64°F) in August, the warmest time of the year, to a chilly 10°C (50°F) during cooler months like January.
At night, you can expect temperatures ranging from 13°C (55°F) in August to around 5°C (41°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Roundstone
Roundstone experiences significant rainfall throughout the year, averaging 1588 mm (63 in) of precipitation annually. While rainfall varies throughout the year, each season offers its own charm. November brings wetter days averaging 173 mm (6.8 in) of precipitation, spread over 24 rainy days.
In contrast, the driest month April experiences a drier climate, with about 98 mm (3.9 in) of rainfall spread across 17 rainy days. For more details, please visit our Roundstone Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Roundstone
Seasonal changes in sunshine hours are quite dramatic in Roundstone. While May receives considerable daily sunshine with up to 5.2 hours, December marks the darkest time of the year, where sunshine is scarce with only 1.2 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Roundstone by Month
The city experiences its highest humidity in January, reaching 90%. In May, the humidity drops to its lowest level at 73%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Roundstone
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, July and August
- Warmest weather: June, July, August and September
- Most sunshine: May
Frequently asked questions about the climate in Roundstone
What is the best time to visit Roundstone?
May, July and August typically offer the most optimal weather in Roundstone. In contrast, January, February, March, November and December tend to have less optimal conditions.
What temperatures can I expect in Roundstone?
Daytime highs range from 10°C (50°F) in January to 18°C (64°F) in August. Nighttime lows range from 5°C (41°F) to 13°C (55°F).
How much rain does Roundstone get?
Annual rainfall is around 1588 mm (63 in). November is the wettest month with 173 mm (6.8 in), while April is the driest with 98 mm (3.9 in).
How sunny is Roundstone?
Roundstone receives around 1,114 hours of sunshine per year. May is the sunniest month with 157 hours, while December is the cloudiest with just 35 hours.
Roundstone 3-Day Forecast
Roundstone on the map
Roundstone is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
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