Climate Overview
The climate in Castellammare di Stabia is temperate. The average annual temperature is 18°C and approximately 957mm of precipitation falls per year. November is the wettest month, receiving around 171mm of rainfall. Castellammare di Stabia is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, March, December, when temperatures can drop to 11°C.
Temperature
Castellammare di Stabia sees moderate temperature variation throughout the year, ranging from 11°C to 26°C. The warmest month is August, when average highs reach 26°C and the mean temperature sits around 25°C. January is the coolest month, with minimum temperatures around 11°C and an average of 12°C. Daily temperature variation is modest, with an average difference of 3°C between highs and lows. The sharpest temperature change occurs between May and June, with a 4°C shift in average temperatures.
Precipitation
Castellammare di Stabia is a moderately rainy area, receiving approximately 957mm of precipitation annually, which averages out to around 80mm per month. The wettest month is November, averaging 171mm of rainfall. October and February also tend to see above-average precipitation. The driest month is July, with just 7mm. That's 164mm less than November, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.
Wind
Castellammare di Stabia is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is February, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 3km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 2km/h gap between the calmest and windiest months.
Seasons
52 days until Autumn
It is currently summer in Castellammare di Stabia, which began on June 21, 2026. Castellammare di Stabia is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 26°C, while the coldest stretch bottoms out in January near 11°C. Autumn is next, beginning on September 23, 2026 — 52 days from now.
Spring
Temperatures range from 11 to 19°C. Precipitation is moderate at around 260mm for the season, averaging 87mm per month. Winds are generally light, averaging 4km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 20 to 26°C. Precipitation is minimal, with only around 37mm for the entire season. Winds are generally light, averaging 3km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 15 to 24°C. Rainfall is heavy, totalling around 404mm across the season with a monthly average of 135mm. Winds are generally light, averaging 4km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 11 to 14°C. Precipitation is moderate at around 257mm for the season, averaging 86mm per month. Winds are generally light, averaging 5km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Best Time to Visit
The best time to visit Castellammare di Stabia is during April, May, June, July, August and September, when the weather is most comfortable for travellers. During these months, average temperatures hover around 21°C with modest rainfall averaging 40mm per month. By contrast, January can be quite cold with temperatures dropping to 11°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.
Monthly Climate Data
The table below shows monthly climate averages for Castellammare di Stabia based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
