Porsgrunn in May
6.5out of 10
Possible, with caveats
Cool: highs only around 15°C. Frequent rain: about 11 rainy days.
15°CAvg high
6°CAvg low
11Rainy days (74 mm)
16:38 hDaylight
04:59Sunrise · 21:36 Sunset
Why this score
- Cool: highs only around 15°C
- Frequent rain: about 11 rainy days
- Rain varies a lot between years (±5.2 days)
What to wear and pack
- Layers you can add or remove
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in May varies a lot between years (±5.2 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 | 0°C | -5°C | 92 mm | 12 | – | – | 3.5 |
| February | 1°C | -5°C | 64 mm | 10 | – | – | 4.0 |
| March | 5°C | -3°C | 62 mm | 9 | – | – | 4.8 |
| April | 10°C | 1°C | 60 mm | 9 | – | – | 5.7 |
| May | 15°C | 6°C | 74 mm | 11 | – | – | 6.5 |
| June | 18°C | 9°C | 94 mm | 12 | – | – | 6.7 |
| July | 21°C | 12°C | 99 mm | 13 | – | – | 7.1 |
| August | 20°C | 11°C | 106 mm | 14 | – | – | 6.8 |
| September | 15°C | 8°C | 101 mm | 12 | – | – | 6.4 |
| October | 10°C | 4°C | 107 mm | 13 | – | – | 5.3 |
| November | 5°C | 0°C | 108 mm | 13 | – | – | 4.3 |
| December | 1°C | -4°C | 84 mm | 12 | – | – | 3.7 |
Frequently asked questions
How hot is Porsgrunn in May?
Daytime highs average 15°C and nights about 6°C.
When is the best time to visit Porsgrunn?
The best months are July, August, June, May.