Dedham in September
8.0out of 10
Yes, a good time to go
Warm and comfortable: highs around 23°C. Some rain: about 8 rainy days.
23°CAvg high
14°CAvg low
8Rainy days (85 mm)
12:16 hDaylight
06:31Sunrise · 18:47 Sunset
Why this score
- Warm and comfortable: highs around 23°C
- Some rain: about 8 rainy days
What to wear and pack
- T-shirts and light layers
How reliable is the forecast?
Rainfall in September is fairly consistent from year to year (2.4 days). 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 | 2°C | -5°C | 87 mm | 10 | – | – | 4.1 |
| February | 4°C | -5°C | 77 mm | 9 | – | – | 4.5 |
| March | 8°C | -1°C | 108 mm | 10 | – | – | 5.1 |
| April | 14°C | 5°C | 93 mm | 10 | – | – | 6.4 |
| May | 20°C | 10°C | 77 mm | 11 | – | – | 7.3 |
| June | 25°C | 15°C | 88 mm | 11 | – | – | 7.6 |
| July | 28°C | 19°C | 77 mm | 11 | – | – | 7.7 |
| August | 27°C | 18°C | 88 mm | 10 | – | – | 7.8 |
| September | 23°C | 14°C | 85 mm | 8 | – | – | 8.0 |
| October | 17°C | 8°C | 98 mm | 9 | – | – | 6.9 |
| November | 11°C | 3°C | 86 mm | 9 | – | – | 6.0 |
| December | 5°C | -2°C | 108 mm | 10 | – | – | 4.6 |
Frequently asked questions
How hot is Dedham in September?
Daytime highs average 23°C and nights about 14°C.
When is the best time to visit Dedham?
The best months are September, August, July, June.