Formia Weather in September

During September, Formia experiences high daytime temperatures of 25°C (77°F) and cooler nights around 19°C (66°F). As part of the summer season, expect quite a bit of rainfall. Around 102 mm (4 in) is typical.

Rainfall in Formia in September

You can expect rain on around 9 days based on historical patterns, with 102 mm (4 in) average for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Formia in September

Daytime highs in Formia in September reach 25°C (77°F), with nights around 19°C (66°F). September is part of summer. Conditions stay fairly consistent through the month, making it easier to plan what to wear. At 19°C (66°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.

Sunshine in Formia in September

With approximately 234 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

If you prefer dry days with pleasant temperatures, May, June, July and August 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.