Plymouth in September
6.8out of 10
Possible, with caveats
Mild: highs around 16°C. Frequent rain: about 10 rainy days.
16°CAvg high
14°CAvg low
10Rainy days (61 mm)
12:21 hDaylight
07:00Sunrise · 19:22 Sunset
Why this score
- Mild: highs around 16°C
- Frequent rain: about 10 rainy days
- Rain varies a lot between years (±4.6 days)
What to wear and pack
- Layers you can add or remove
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in September varies a lot between years (±4.6 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 | 9°C | 7°C | 102 mm | 15 | – | – | 4.9 |
| February | 9°C | 6°C | 77 mm | 12 | – | – | 5.4 |
| March | 10°C | 7°C | 67 mm | 12 | – | – | 5.5 |
| April | 11°C | 8°C | 63 mm | 12 | – | – | 5.8 |
| May | 13°C | 10°C | 61 mm | 11 | – | – | 6.2 |
| June | 16°C | 13°C | 61 mm | 11 | – | – | 6.6 |
| July | 17°C | 15°C | 61 mm | 11 | – | – | 6.9 |
| August | 18°C | 15°C | 69 mm | 11 | – | – | 6.9 |
| September | 16°C | 14°C | 61 mm | 10 | – | – | 6.8 |
| October | 14°C | 12°C | 104 mm | 14 | – | – | 5.8 |
| November | 12°C | 9°C | 112 mm | 15 | – | – | 5.2 |
| December | 10°C | 7°C | 109 mm | 15 | – | – | 5.0 |
Frequently asked questions
How hot is Plymouth in September?
Daytime highs average 16°C and nights about 14°C.
When is the best time to visit Plymouth?
The best months are July, August, September, June.