Charlestown weather by month & the best time to visit
Ireland · small town · oceanic / maritime climate
The best time to visit Charlestown is July — its sunniest month (Sunshine Score 50/100), with August and June close behind. Charlestown averages about 1,412 hours of sunshine a year. Daytime highs around 17°C / 63°F and roughly 111 mm of rain in July.
When is the best time to visit Charlestown?
For sunshine, the best time to visit Charlestown is July, then August and June. The dullest month is January (0/100, 123 mm of rain). The full month-by-month picture is in the table below.
How sunny is Charlestown?
Charlestown isn't a sunny place by world standards: about 1,412 hours of sunshine a year. 50 Sunshine Score points separate July (50) from January (0), so the month you pick matters. It ranks #6 of 10 destinations in Ireland for annual sunshine, below the national median of 1,418 hours. The year's 1,289 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | 6° / 43°F | 2° / 36°F | 123 mm | 0 |
| February | 0 | 6° / 43°F | 2° / 36°F | 96 mm | 1 |
| March | 0 | 8° / 46°F | 2° / 36°F | 92 mm | 2 |
| April | 18 | 11° / 52°F | 4° / 39°F | 76 mm | 3 |
| May | 29 | 13° / 55°F | 6° / 43°F | 93 mm | 4 |
| June | 45 | 16° / 61°F | 9° / 48°F | 100 mm | 5 |
| July | 50 | 17° / 63°F | 10° / 50°F | 111 mm | 5 |
| August | 48 | 17° / 63°F | 10° / 50°F | 120 mm | 4 |
| September | 40 | 15° / 59°F | 9° / 48°F | 99 mm | 3 |
| October | 22 | 12° / 54°F | 7° / 45°F | 119 mm | 2 |
| November | 5 | 9° / 48°F | 4° / 39°F | 131 mm | 1 |
| December | 0 | 7° / 45°F | 3° / 37°F | 129 mm | 0 |
Nearest destinations
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Head-to-head
How Charlestown compares month by month: Charlestown vs Dublin · Charlestown vs Belfast · Charlestown vs Cork · Charlestown vs Shannon · all comparisons
Charlestown: questions and answers
What kind of destination is Charlestown?
Charlestown is a small town in Ireland with a oceanic / maritime climate.
How many hours of sunshine does Charlestown get a year?
Charlestown gets about 1,412 hours of sunshine a year, at its best around July.
When is the best time to visit Charlestown?
The sunniest time to visit Charlestown is July, when the Sunshine Score peaks at 50/100 (with August and June close behind). Expect daytime highs around 17°C / 63°F.
What is the least sunny month in Charlestown?
January is the least sunny month in Charlestown, scoring 0/100 with about 123 mm of rain.
How strong is the sun in Charlestown?
The typical midday UV index in Charlestown peaks around 5 (moderate) in June, easing to about 0 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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