Johnstone Weather in September

September in Johnstone brings moderate temperatures, with daytime highs of 17°C (63°F) and nights around 10°C (50°F). Quite a bit of rainfall is expected, around 104 mm (4.1 in), so pack an umbrella.

Rainfall in Johnstone in September

Historically, September sees about 20 days of rain, with a monthly average of 104 mm (4.1 in). This is a wet month with frequent and often heavy showers. Both the number of rain days and the total rainfall are high.

Temperature in Johnstone in September

September in Johnstone brings moderate temperatures, with highs of 17°C (63°F) and nights around 10°C (50°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights drop to 10°C (50°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Johnstone in September

The month experiences a moderate amount of sunlight, with 117 hours of sunshine. This provides a nice balance between sunshine and clouds.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. June typically offers the best weather for Johnstone.