Castletown Weather in August

August in Castletown averages 17°C (63°F) during the day and 12°C (54°F) at night. Quite a bit of rainfall is typical this month, with around 86 mm (3.4 in) on average. An umbrella is a good idea.

Rainfall in Castletown in August

Typically, you can expect about 19 days of rain this month, with 86 mm (3.4 in) on average. With rain spread across many days but low totals, showers are typically short and light rather than heavy.

Temperature in Castletown in August

In August, Castletown sees moderate temperatures, with highs of 17°C (63°F). Nights drop to around 12°C (54°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. With overnight lows of 12°C (54°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep. On average, it sees the highest temps of the year.

Sunshine in Castletown in August

With about 133 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

If you're a fan of comfortable temperatures and drier conditions, August is a great time to visit.