Johnstone in August
6.1out of 10
Possible, with caveats
Mild: highs around 18°C. Very wet: about 16 rainy days.
18°CAvg high
11°CAvg low
16Rainy days (104 mm)
14:49 hDaylight
05:57Sunrise · 20:47 Sunset
Why this score
- Mild: highs around 18°C
- Very wet: about 16 rainy days
- Rain varies a lot between years (±4.7 days)
What to wear and pack
- Layers you can add or remove
- Rain jacket or compact umbrella
How reliable is the forecast?
Rain in August varies a lot between years (±4.7 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 | 126 mm | 17 | – | – | 4.1 |
| February | 7°C | 3°C | 104 mm | 15 | – | – | 4.6 |
| March | 9°C | 3°C | 92 mm | 15 | – | – | 4.9 |
| April | 11°C | 5°C | 77 mm | 14 | – | – | 5.5 |
| May | 14°C | 7°C | 78 mm | 14 | – | – | 6.0 |
| June | 16°C | 10°C | 84 mm | 15 | – | – | 6.2 |
| July | 18°C | 12°C | 92 mm | 16 | – | – | 6.2 |
| August | 18°C | 11°C | 104 mm | 16 | – | – | 6.1 |
| September | 16°C | 10°C | 90 mm | 14 | – | – | 6.1 |
| October | 12°C | 7°C | 122 mm | 16 | – | – | 5.2 |
| November | 9°C | 5°C | 118 mm | 17 | – | – | 4.6 |
| December | 7°C | 3°C | 124 mm | 16 | – | – | 4.3 |
Frequently asked questions
How hot is Johnstone in August?
Daytime highs average 18°C and nights about 11°C.
When is the best time to visit Johnstone?
The best months are June, July, August, September.