Valentia Island Weather in September
In Valentia Island, September brings moderate daytime temperatures around 17°C (63°F), with nights cooling to 12°C (54°F). Expect quite a bit of rainfall this month.
Rainfall in Valentia Island in September
Analyzing past climate data, one can expect approximately 20 days of rain, averaging 120 mm (4.7 in). This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.
Temperature in Valentia Island in September
In September, Valentia Island sees moderate temperatures, with highs of 17°C (63°F). Nights drop to around 12°C (54°F). The difference between afternoon and evening temperatures is usually noticeable. With lows of 12°C (54°F), nights are cool. If you're out after dark, an extra layer will keep you comfortable. The cooler air at night is also great for getting a good rest.
Sunshine in Valentia Island in September
The month brings about 118 hours of sunlight, offering a comfortable mix of sun and overcast.
Wind Speed in Valentia Island in September
Wind speeds average 5 m/s (10 knots) during September. At this speed, gentle to moderate breezes make small trees sway and the wind creates whitecaps on water bodies. Daily variations range from moderate winds to stronger breezes, creating excellent conditions for sailing, kite flying and wind sports.
Average water temperature in September
The water temperature is 15°C (59°F) — chilly, but perfectly fine for a swim if you're not too sensitive to cold water. A short wetsuit can make longer sessions more comfortable.Should you favor a climate that's both dry and comfortably warm, May, June, July and August typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ireland, check out our Valentia Island's climate page.
Valentia Island Temperature in September
Min Temperature
12°C (54°F)
Max Temperature
17°C (63°F)
Water Temperature
15°C (59°F) *
Chance of Rain
67%
Precipitation
120 mm (4.7 in)
Rainy days
20 days
Humidity
77% *
Windspeed
5 m/s (10 knots) *
Sunshine
118 hours *
Percentage Sunshine
30% *
Best Places in Ireland in September
Find out more about the weather in Ireland and which places have the best travel conditions in this month. See all of Ireland in September →
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What to Wear in Valentia Island in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. With water temperatures around 15°C (59°F), the water is quite cold for swimming. You can skip the swimwear unless you're particularly tough. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Valentia Island in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ireland, check out our Valentia Island's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Valentia Island climate overview or explore weather in Ireland.
