When to go · Letterkenny
Letterkenny in September
Great month. Inside Letterkenny's best window: May–Sep.
Key facts
- Verdict
- Great
- Temperature
- 16°C (61°F)61°F (16°C) / 9°C (48°F)48°F (9°C)
- average high / low
- Rain days
- 17
- Crowds
- Medium
- Ireland overall
- Prices
- Medium
- Ireland overall
Verdict
Inside Letterkenny's best window: May–Sep.
Is another month better than September?
No other month rates higher than September for Letterkenny in this guide.
Weather in September
- LetterkennyHighs around 16 °C (61 °F), lows around 9 °C (48 °F), rain on about 17 daysHighs around 61 °F (16 °C), lows around 48 °F (9 °C), rain on about 17 days
Crowds and prices
- Crowds · Ireland overall
- Medium
- Prices · Ireland overall
- Medium
Ireland overall: Schools back, sea at its warmest, often settled weather: a strong month for driving the coast.
Compare two months
Weather, crowds and prices for any two months in Letterkenny, side by side.
Verdict
Sep: Great
May: Great
Daytime high
Sep: 16 °C (61 °F)61 °F (16 °C)
May: 15 °C (59 °F)59 °F (15 °C)
Night low
Sep: 9 °C (48 °F)48 °F (9 °C)
May: 6 °C (43 °F)43 °F (6 °C)
Rain days
Sep: 17
May: 15 (better)
Crowds
Sep: Medium
May: Medium
Prices
Sep: Medium
May: Medium
Festivals listed
Sep: 0
May: 0
September: Inside Letterkenny's best window: May–Sep.
May: Inside Letterkenny's best window: May–Sep.
Letterkenny: figures are long-term averages from this guide, not a forecast.
What to pack
- A warm layer for the evenings
- A rain jacket or umbrella and shoes that dry fast