Shannon weather by month & the best time to visit
🇮🇪 Ireland · small town · oceanic / maritime climate
The best time to visit Shannon is July — its sunniest month (Sunshine Score 64/100), with August and June close behind. Shannon averages about 1,468 hours of sunshine a year. Daytime highs around 19°C / 66°F and roughly 92 mm of rain in July.
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- Sun hours / year
- 1,468
- Sunniest month
- July
- Peak score
- 64/100
- Rain / year
- 1,091 mm
- Midday UV at peak
- 5 (moderate)
- Population
- 10k
- Elevation
- Sea level
When is the best time to visit Shannon?
For sunshine, the best time to visit Shannon is July, then August and June. The dullest month is January (0/100, 104 mm of rain). The full month-by-month picture is in the table below.
How sunny is Shannon?
Shannon isn't a sunny place by world standards: about 1,468 hours of sunshine a year. 64 Sunshine Score points separate July (64) from January (0), so the month you pick matters. It ranks #3 of 10 destinations in Ireland for annual sunshine, above the national median of 1,418 hours. The year's 1,091 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 | 8° / 46°F | 4° / 39°F | 104 mm | 0 |
| February | 6 | 9° / 48°F | 3° / 37°F | 81 mm | 1 |
| March | 12 | 10° / 50°F | 3° / 37°F | 77 mm | 2 |
| April | 31 | 13° / 55°F | 5° / 41°F | 68 mm | 3 |
| May | 49 | 16° / 61°F | 8° / 46°F | 76 mm | 4 |
| June | 60 | 18° / 64°F | 10° / 50°F | 83 mm | 5 |
| July | 64 | 19° / 66°F | 12° / 54°F | 92 mm | 4 |
| August | 64 | 19° / 66°F | 12° / 54°F | 96 mm | 4 |
| September | 54 | 17° / 63°F | 10° / 50°F | 82 mm | 3 |
| October | 34 | 14° / 57°F | 8° / 46°F | 101 mm | 1 |
| November | 16 | 11° / 52°F | 6° / 43°F | 119 mm | 1 |
| December | 6 | 9° / 48°F | 4° / 39°F | 112 mm | 0 |
See Shannon on the interactive sunshine globe →
Nearby places for sunshine
- Cork Ireland · 100 km · best in Jul · 1,693 h sun/yr
- Charlestown Ireland · 135 km · best in Jul · 1,412 h sun/yr
- Dublin Ireland · 195 km · best in Jul · 1,488 h sun/yr
- Belfast United Kingdom · 281 km · best in Jul · 1,263 h sun/yr
- Castletown Isle of Man · 324 km · best in Jul · 1,459 h sun/yr
- Newquay United Kingdom · 370 km · best in Jul · 1,788 h sun/yr
Nearest destinations
- Inis Oírr Ireland · 56 km · 1,409 h sun/yr · best in Jul
- Inis Meáin Ireland · 61 km · 1,409 h sun/yr · best in Jul
- Inis Mór Ireland · 66 km · 1,409 h sun/yr · best in Jul
- Connemara Ireland · 69 km · 1,410 h sun/yr · best in Jul
- Kerry Ireland · 71 km · 1,466 h sun/yr · best in Jul
Head-to-head
How Shannon compares month by month: Shannon vs Dublin · Shannon vs Cork · Shannon vs Charlestown · all comparisons
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