Climate Overview
The climate in Castel Volturno is temperate. The average annual temperature is 18°C and approximately 1084mm of precipitation falls per year. November is the wettest month, receiving around 232mm of rainfall. Castel Volturno 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, February, March, when temperatures can drop to 8°C.
Temperature
Castel Volturno sees moderate temperature variation throughout the year, ranging from 8°C to 28°C. The warmest month is August, when average highs reach 28°C and the mean temperature sits around 26°C. January is the coolest month, with minimum temperatures around 8°C and an average of 10°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows. The sharpest temperature change occurs between May and June, with a 5°C shift in average temperatures.
Precipitation
Castel Volturno is a moderately rainy area, receiving approximately 1084mm of precipitation annually, which averages out to around 90mm per month. The wettest month is November, averaging 232mm of rainfall. December and October also tend to see above-average precipitation. The driest month is July, with just 7mm. That's 224mm 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
Castel Volturno is mildly breezy, with an average annual wind speed of 18km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is November, averaging 20km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 16km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h between the calmest and windiest months.
Seasons
88 days until Summer
It is currently spring in Castel Volturno, which began on March 20, 2026. Castel Volturno 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 28°C, while the coldest stretch bottoms out in January near 8°C. Summer is next, beginning on June 21, 2026 — 88 days from now.
Spring
Temperatures range from 10 to 20°C. Precipitation is moderate at around 202mm for the season, averaging 67mm per month. Winds are moderate at around 18km/h. Light layers work well as temperatures warm through the season — a great time to be outdoors.
Summer
Temperatures range from 20 to 28°C. Rainfall is relatively light, with around 49mm over the season and a monthly average of 16mm. Winds are moderate at around 18km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 13 to 25°C. Rainfall is heavy, totalling around 471mm across the season with a monthly average of 157mm. Winds are moderate at around 18km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 8 to 14°C. Rainfall is heavy, totalling around 361mm across the season with a monthly average of 120mm. Winds are moderate at around 19km/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 Castel Volturno is during May and June, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 41mm per month. By contrast, August can be uncomfortably hot with highs reaching 28°C, while January is the coldest period with lows dropping to 8°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 Castel Volturno 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.
