Hermiston in May
8.4out of 10
Yes, a good time to go
Warm and comfortable: highs around 25°C. Some rain: about 5 rainy days.
25°CAvg high
11°CAvg low
5Rainy days (24 mm)
14:44 hDaylight
05:31Sunrise · 20:15 Sunset
Why this score
- Warm and comfortable: highs around 25°C
- Some rain: about 5 rainy days
What to wear and pack
- T-shirts and light layers
- A light jacket for cooler evenings
How reliable is the forecast?
Rainfall in May is fairly consistent from year to year (2.7 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 | 6°C | 0°C | 39 mm | 10 | – | – | 5.1 |
| February | 10°C | 1°C | 30 mm | 8 | – | – | 5.9 |
| March | 14°C | 3°C | 33 mm | 9 | – | – | 6.7 |
| April | 19°C | 6°C | 25 mm | 6 | – | – | 7.8 |
| May | 25°C | 11°C | 24 mm | 5 | – | – | 8.4 |
| June | 29°C | 14°C | 16 mm | 3 | – | – | 8.7 |
| July | 34°C | 17°C | 4 mm | 1 | – | – | 7.6 |
| August | 33°C | 17°C | 4 mm | 1 | – | – | 7.8 |
| September | 28°C | 13°C | 8 mm | 2 | – | – | 8.8 |
| October | 19°C | 7°C | 25 mm | 6 | – | – | 7.9 |
| November | 11°C | 3°C | 36 mm | 8 | – | – | 6.2 |
| December | 6°C | -1°C | 41 mm | 10 | – | – | 5.0 |
Frequently asked questions
How hot is Hermiston in May?
Daytime highs average 25°C and nights about 11°C.
When is the best time to visit Hermiston?
The best months are September, June, May.