King's Lynn in September
7.1out of 10
Possible, with caveats
Mild: highs around 18°C. Frequent rain: about 10 rainy days.
18°CAvg high
12°CAvg low
10Rainy days (59 mm)
12:23 hDaylight
06:41Sunrise · 19:04 Sunset
Why this score
- Mild: highs around 18°C
- Frequent rain: about 10 rainy days
- Rain varies a lot between years (±4.4 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 (±4.4 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 | 7°C | 3°C | 54 mm | 12 | – | – | 5.0 |
| February | 7°C | 3°C | 43 mm | 10 | – | – | 5.3 |
| March | 9°C | 4°C | 46 mm | 10 | – | – | 5.7 |
| April | 12°C | 6°C | 46 mm | 11 | – | – | 6.1 |
| May | 15°C | 9°C | 52 mm | 10 | – | – | 6.7 |
| June | 18°C | 11°C | 61 mm | 11 | – | – | 7.0 |
| July | 20°C | 14°C | 59 mm | 12 | – | – | 7.3 |
| August | 20°C | 14°C | 64 mm | 11 | – | – | 7.4 |
| September | 18°C | 12°C | 59 mm | 10 | – | – | 7.1 |
| October | 14°C | 9°C | 66 mm | 12 | – | – | 6.2 |
| November | 10°C | 6°C | 60 mm | 12 | – | – | 5.6 |
| December | 7°C | 3°C | 57 mm | 12 | – | – | 5.2 |
Frequently asked questions
How hot is King's Lynn in September?
Daytime highs average 18°C and nights about 12°C.
When is the best time to visit King's Lynn?
The best months are August, July, September, June.