Harpenden Weather in May

May in Harpenden brings moderate temperatures, with daytime highs of 18°C (64°F) and nights around 8°C (46°F). Quite a bit of rainfall is expected, around 61 mm (2.4 in), so pack an umbrella.

Rainfall in Harpenden in May

Typically, about 14 days will experience rainfall, with an average of 61 mm (2.4 in) for the month. Rain this month is fairly typical, a standard mix of wet and dry days with no particularly heavy or persistent showers.

Temperature in Harpenden in May

Temperatures in Harpenden in May top out at 18°C (64°F) and drop to 8°C (46°F) overnight. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. At 8°C (46°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.

Sunshine in Harpenden in May

The month brings about 185 hours of sunlight, offering a comfortable mix of sun and overcast.

If you prefer dry days with pleasant temperatures, June, July, August and September typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.