September weather forecastClifden, Ireland
September
Weather in September
September marks the end of summer and the beginning of autumn in Clifden. The sea temperature begins to retreat from its peak at 15.3°C (59.5°F) in August to 14.8°C (58.6°F). The transition into autumn becomes noticeable with shorter daylight hours and gradual temperature drop. The blend of the receding summer warmth and a nip in the air marks the commencement of fall. Nature starts its colourful transition, the landscape lush from summer rains, preparing for the onset of autumn.Temperature
The start of September in Clifden sees the average high-temperature at a still comfortable 16°C (60.8°F), showing little difference from August's 18°C (64.4°F). Throughout the month of September, Clifden sees a steady low-temperature average of 10°C (50°F).Rainfall
In Clifden, Ireland, during September, the rain falls for 21 days and regularly aggregates up to 116mm (4.57") of precipitation. In Clifden, during the entire year, the rain falls for 248 days and collects up to 1202mm (47.32") of precipitation.Sea temperature
In Clifden, in September, the average water temperature is 14.8°C (58.6°F).Note: Dipping in 14.8°C (58.6°F) at temperatures less than 10°C (50°F) without proper gear can lead to pronounced cold shock and breathing difficulties.
Daylight
In Clifden, the average length of the day in September is 12h and 41min.On the first day of September in Clifden, Ireland, sunrise is at 6:50 am and sunset at 8:29 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 7:18 pm IST.
Sunshine
In September, the average sunshine in Clifden is 4h.UV index
In Clifden, the average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 4 in September converts into the following recommendations:
Be vigilant - Suggestions to stave off sun damage are provided. It's recommended to limit sun exposure when its radiation is at its peak during midday. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Clifden, Ireland
- Average high temperature in September: 16°C
The warmest months (with the highest average high temperature) are July and August (18°C).
The months with the lowest average high temperature are January, February and December (9°C).
- Average low temperature in September: 10°C
The months with the highest average low temperature are July and August (11°C).
The coldest months (with the lowest average low temperature) are January and February (3°C).
Average rainfall in September
Clifden, Ireland
- Average rainfall in September: 116mm
The wettest month (with the highest rainfall) is January (137mm).
The driest month (with the least rainfall) is April (66mm).
Average rainfall days in September
Clifden, Ireland
- Average rainfall days in September: 21 days
The months with the highest number of rainy days are January, November and December (24 days).
The months with the least rainy days are April, June and July (17 days).
Average sea temperature in September
Clifden, Ireland
- Average sea temperature in September: 14.8°C
The best month for swimming (with the highest average sea temperature) is August (15.3°C).
The coldest month (with the lowest average sea temperature) is March (9.3°C).
Average daylight in September /
Average sunshine in September
Clifden, Ireland
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 16h and 54min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 4h
The month with the most sunshine is May (Average sunshine: 6h).
The month with the least sunshine is December (Average sunshine: 1h).
Average UV index in September
Clifden, Ireland
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 0).
