Weather in Amalfi Coast in September

How September compares

September is the 4th warmest month of the year in Amalfi Coast and ranks 108th of 134 destinations we compare for September - see where else is hot in September. Within Italy it is 8th of 16 (Italy in September). Against London's average high of 18.6°C in September, Amalfi Coast is 5.5°C warmer by day and 8.0°C warmer at night.

Daytime and night-time in September

The typical September day in Amalfi Coast peaks at 24.1°C, but that is an average: the warmest 10% of days reach 26.9°C or more. Roughly 1 in 3 days top 25°C and 1 in 125 pass 30°C. Nights average 19.2°C; one night in ten drops to 16.5°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest September day here reached 31.8°C (2020-09-13) and the coldest night 12.1°C (2017-09-21).

Rain in September

Wet (more than 8 rainy days): about 9 days with 1 mm or more, 89 mm in total. Year to year it varies a lot - the wettest September was 1996 with 213 mm, the driest 1997 with 14 mm. Humidity averages 72%.

Sea temperature in September

The sea averages 24.4°C - warm enough to swim (22°c+). Depending on the year it ranges from 23.6°C to 25.3°C. For the warmest sea here, come in August (26.4°C).

Sunshine and daylight

Around 7.4 hours of sunshine a day (estimated from cloud cover), 12.2 hours of daylight: the sun rises about 06:42 and sets about 19:11 local time in mid-September. Average cloud cover is 39%.

Is September a good time to visit Amalfi Coast?

Yes - it is one of the better months: warm days, manageable rain and long sunny days. The best months for Amalfi Coast on our scoring are July, August, June; months averaging 25°C or more: Jul, Aug.

Warm days, mild evenings and little extreme heat

Daytime warmth should suit travellers who find hotter weather tiring. Only 1% of days reach 30°C, while 36% reach 25°C, so September is more about comfortable warmth than consistently hot afternoons. Light clothing makes sense during the day, though sunshine can still feel strong around midday and shade is useful. Average night lows are around 19°C, making evenings generally mild rather than chilly. Pack a light layer for sitting outside after dark, especially if you feel the cold. Humidity averages 72%, so conditions may feel a little sticky at times; breathable clothes are a better choice than heavy fabrics.

Good swimming conditions, but leave room for rain

The sea is warm enough for swimming, with an average temperature of 24.4°C and a year-to-year range of 24°C to 25°C. That makes September a sensible choice if sea time matters more to you than very hot air temperatures. Sunshine averages about 7.4 hours within 12.2 hours of daylight, leaving useful time for being outdoors without promising uninterrupted sun. Rain is the main catch: about 9 rainy days means you should not build the whole trip around dry weather. Keep swimming and other outdoor plans flexible, and pack a light waterproof alongside your swimwear. The monthly figures do not tell you how rain will fall during your stay, so avoid assuming it will only arrive as brief showers.