The climate in Monkstown during September can be summarized as mild and reasonably dry.
September is in the fall / autumn in Monkstown and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 17°C (62°F), whilst at night 10°C (50°F) is normal.
|Daytime temperature||16.8°C 62.2°F|
|Nightly temperature||9.9°C 49.7°F|
|Average temperature||13.3°C 55.9°F|
|Daily sunshine||4.8 hrs|
|Avg rainfall||75 mm 3 ins|
|Rainy days||15 days|
|Sea temperature||15.3°C 59.5°F|
|Windspeed||18kph 11 mph|
On average September is the 5th wettest month of the year in Monkstown with around 75mm 3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.8 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Monkstown in September 2022.
|Hottest month:||July||18.8°C 65.8°F|
|Driest month:||April||52mm 2ins|
|Coldest month:||February||7.6°C 45.7°F|
|Wettest month:||December||94mm 3.7ins|