Weather in September
Temperature
Sligo, Ireland, starts September with an average high-temperature of a still refreshing 16°C (60.8°F), a minor shift from August's 18°C (64.4°F). During September, Sligo sees a mean low-temperature of 8°C (46.4°F).Rainfall
In Sligo, in September, it is raining for 21 days, with typically 104mm (4.09") of accumulated precipitation. In Sligo, Ireland, during the entire year, the rain falls for 247 days and collects up to 1260mm (49.61") of precipitation.Sea temperature
The months with the warmest seawater in Sligo are July through September, with an average sea temperature of 14°C (57.2°F).Note: In 14°C (57.2°F), even brief exposure to 13°C (55.4°F) feels biting, and anything less than 10°C (50°F) risks cold shock and impaired breathing, considering one's health.
Daylight
The average length of the day in September in Sligo is 12h and 42min.On the first day of September, sunrise is at 6:42 am and sunset at 8:24 pm. On the last day of the month, sunrise is at 7:35 am and sunset at 7:12 pm IST.
Sunshine
In Sligo, the average sunshine in September is 3h.UV index
In September, the average daily maximum UV index in Sligo is 3. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Boost your sun resistance with garments that are densely woven yet spacious.
Frequently asked questions
What are the temperatures in Sligo in September?
How much does it rain in Sligo in September?
What are the months with the warmest sea water in Sligo?
What is the water temperature in September in Sligo?
What is the average length of the day in September in Sligo?
When are sunrise and sunset in September in Sligo?
How long on average sun shines in September in Sligo?
What is the UV index reading in September in Sligo?
Average temperature in September
Sligo, 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 and February (7°C).
- Average low temperature in September: 8°C
The months with the highest average low temperature are July and August (10°C).
The coldest months (with the lowest average low temperature) are January and February (1°C).
Average rainfall in September
Sligo, Ireland
- Average rainfall in September: 104.4mm
The wettest month (with the highest rainfall) is October (134.3mm).
The driest month (with the least rainfall) is April (77.9mm).
Average rainfall days in September
Sligo, Ireland
- Average rainfall days in September: 21 days
The months with the highest number of rainy days are January, October and December (23 days).
The months with the least rainy days are April and June (18 days).
Average sea temperature in September
Sligo, Ireland
- Average sea temperature in September: 14°C
The best months for swimming (with the highest average sea temperature) are July, August and September (14°C).
The coldest months (with the lowest average sea temperature) are February, March and April (9°C).
Average daylight in September /
Average sunshine in September
Sligo, Ireland
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in September: 3h
The months with the most sunshine are April, May and June (Average sunshine: 5h).
The months with the least sunshine are January and December (Average sunshine: 1h).
Average UV index in September
Sligo, Ireland
- Average UV index in September: 3
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).
Sligo, Ireland
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