Letterkenny Weather in June
During June, Letterkenny experiences moderate daytime temperatures of 17°C (63°F) and cooler nights around 10°C (50°F). As part of the summer season, expect quite a bit of rainfall. Around 104 mm (4.1 in) is typical.
Rainfall in Letterkenny in June
You can typically expect 18 days of rain this month, averaging around 104 mm (4.1 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 Letterkenny in June
Daytime temperatures in Letterkenny reach 17°C (63°F) in June, dropping to 10°C (50°F) at night. June is typically considered a summer month. Conditions are often most pleasant around the middle of the day. At 10°C (50°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Letterkenny in June
The city usually sees around 160 hours of sunlight, indicating a moderately sunny period.If you prefer dry days with pleasant temperatures, May, July, August and September typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Letterkenny Temperature in June
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Letterkenny Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Letterkenny - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Letterkenny typically stay consistent throughout June, with daily highs averaging around 17°C (63°F). Nights are cool, with lows typically ranging from 9°C (48°F) to 11°C (52°F).
Average temperatures in June
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in June
Historical weather records for Letterkenny in June
Browse day-by-day weather records for Letterkenny spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Letterkenny historical weather extremes in June
According to our 50 years of weather records for Letterkenny, the following extremes were recorded between 1976 and 2026.
- On June 19, 1989, temperatures climbed to 27°C (81°F), marking the warmest June day on record.
- Letterkenny experienced its chilliest June day on June 1, 2015, reaching only 10°C (50°F).
- The lowest overnight temperature recorded in June was 3°C (37°F) (June 10, 2011).
Best Places in Ireland in June
Find out more about the weather in Ireland and which places have the best travel conditions in this month. See all of Ireland in June →
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Letterkenny in June
Pleasant temperatures in June 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. Bring sunglasses since you'll have some sunny periods throughout the month
What To Do in Letterkenny in June
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling5/10 -
Walking5/10 -
Camping3/10 -
Outdoor sports9/10
Letterkenny 3-Day Forecast
See the full Letterkenny climate overview or explore weather in Ireland.
Popular in June
Where to go in June - average daytime high across popular destinations.
Dublin
18°C (64°F) Galway
18°C (64°F) Kilkenny
18°C (64°F) Westport17°C (63°F) Kenmare18°C (64°F) Cork17°C (63°F) Killarney18°C (64°F) Doolin17°C (63°F) 
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