Dumbarton in May
5.8out of 10
Possible, with caveats
Cool: highs only around 14°C. Very wet: about 15 rainy days.
14°CAvg high
6°CAvg low
15Rainy days (86 mm)
16:02 hDaylight
05:14Sunrise · 21:15 Sunset
Why this score
- Cool: highs only around 14°C
- Very wet: about 15 rainy days
- Rain varies a lot between years (±5.7 days)
What to wear and pack
- A warm jacket
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in May varies a lot between years (±5.7 rainy days), so check the forecast closer to your trip. Averages cover 30 years (1991–2020). Individual days can differ a lot.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 6°C | 2°C | 148 mm | 18 | – | – | 3.8 |
| February | 7°C | 2°C | 121 mm | 16 | – | – | 4.3 |
| March | 8°C | 3°C | 106 mm | 16 | – | – | 4.7 |
| April | 11°C | 4°C | 84 mm | 14 | – | – | 5.3 |
| May | 14°C | 6°C | 86 mm | 15 | – | – | 5.8 |
| June | 16°C | 9°C | 90 mm | 15 | – | – | 6.1 |
| July | 18°C | 11°C | 102 mm | 16 | – | – | 6.1 |
| August | 17°C | 11°C | 113 mm | 17 | – | – | 5.9 |
| September | 15°C | 9°C | 101 mm | 14 | – | – | 6.0 |
| October | 12°C | 7°C | 142 mm | 16 | – | – | 5.0 |
| November | 9°C | 4°C | 132 mm | 17 | – | – | 4.5 |
| December | 6°C | 2°C | 142 mm | 17 | – | – | 4.0 |
Frequently asked questions
How hot is Dumbarton in May?
Daytime highs average 14°C and nights about 6°C.
When is the best time to visit Dumbarton?
The best months are June, July, September, August.