Greencastle weather in September (Donegal County, Ireland)

What can you expect from the weather in Greencastle during September? Wondering if it's an optimal time for a visit? This page provides detailed information on the weather conditions for that month.

In September, Greencastle typically experiences moderate temperatures and high rainfall. Anticipate daytime temperatures around 16°C, while night temperatures can drop to 12°C.

Greencastle in September usually receives high rainfall, averaging around 115 mm for the month. Based on our climate data of the past 30 years, about 21 days of rain are anticipated.

The area experiences a moderate amount of sunshine, with approximately 118 hours of sunlight expected. This makes it neither too gloomy nor overly bright.

If you're inclined towards comfortable temperatures and drier conditions, September is a prime time to visit Greencastle. April, May, June, July, August, September and October typically offer the best circumstances. While January, February, March, November and December tend to showcase less optimal conditions.

For an in-depth look at the yearly conditions, visit our specialized Greencastle climate page with graphs.

 

Greencastle, monthly averages in September

Min Temperature 12°C  

Max Temperature 16°C  

Chance of Rain 70%  

Precipitation 115 mm  

Rainy days 21 days  

Sunshine 118 hours *  

Percentage Sunshine *  

* Data from: Derry, Ireland (31 KM, 19 Miles).

Where to go in Ireland in September

Find out more about the weather in Ireland and which places have the best travel conditions in this month.

Weather conditions Weather

Temperatures

Precipitation

Map not visible? Whoops sorry! Please refresh the page.

Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

Plan on layering your clothes. Some days or part of the day it will be nice and warm and some moments it can be a bit chilly. Bring a rain jacket in case it rains during your stay.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

5/10

Cycling

5/10

Walking

5/10

Camping

6/10

Outdoor sports

9/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Greencastle.

Our site offers climate and forecast data for every country in the world. Are you going to Ireland? On this website you can find historical weather averages for many cities in Ireland. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.