Average weather in September in Donegal (Donegal County), Ireland

The average minimum temperature (usually the minimum temperature is noted during the night) in Donegal in September is 10.0°C (50°F). The amount of rain in September is normal with an average of 69mm (2.7in). The average maximum daytime temperature lies around 16.7°C (62.06°F). The sun will occasionally show itself with 118 hours of sunshine during the whole month.


So what to wear in September? Visitors traveling to Donegal should plan on bringing a totally waterproof rain jacket since it will often be raining. 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.

No idea where to travel to this year? We now have a tool which suggests which destination suits your ideal climate conditions. Find out where to go with our weather planner.

For other monthly average weather and what to do in September look at the numbers below.

Monthly Averages in September

Show in Celsius

Min Temperature 50 °F
Max Temperature 62 °F
Chance of Rain 43%
Precipitation 3 in
Rainy Days 13
Sunshine Hours 118

Where to stay in Donegal

What To Do

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

Swimming
5/10
Cycling
6/10
Walking
6/10
Camping
8/10
Outdoor sports
10/10

Weather Forecasts for Donegal (Donegal County)

MON Dec 06
42°F | 35°F

Heavy rain

TUE Dec 07
42°F | 34°F

Heavy rain

WED Dec 08
45°F | 40°F

Moderate rain

Interested in more climate information?

Weather and Climate provides you with all the information you need about the climate in Donegal.

Our site offers climate and forecast data for almost all countries 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 suggests which destination suits your ideal climate conditions. Find out where to go with our weather planner.