Naples has a Mediterranean climate (Koppen Csa) with hot, dry summers and mild, wet winters. Located on the Bay of Naples between Mount Vesuvius and the Tyrrhenian Sea, the city averages 1,007mm of annual rainfall, concentrated from October through January. Sea temperatures peak at 26°C (79°F) in August and drop to 14°C (57°F) in February. Naples enjoys 2,500+ hours of sunshine annually, among the highest in Italy.
Naples Weather by Month: Temperature and Rainfall Data
Data from the Italian Air Force Meteorological Service, measured at Napoli-Capodichino Airport. Sea temperatures are averages from the Campania coastline.
| Month | Avg High (°C/°F) | Avg Low (°C/°F) | Rainfall (mm) | Rain Days | Humidity (%) | Sunshine (hrs) | Sea Temp (°C/°F) |
|---|---|---|---|---|---|---|---|
| January | 13 / 55 | 4 / 39 | 104 | 10 | 75 | 115 | 15 / 59 |
| February | 13 / 55 | 5 / 41 | 95 | 9 | 73 | 126 | 14 / 57 |
| March | 16 / 61 | 7 / 45 | 77 | 8 | 72 | 164 | 14 / 57 |
| April | 19 / 66 | 9 / 48 | 65 | 8 | 71 | 195 | 16 / 61 |
| May | 23 / 73 | 13 / 55 | 49 | 5 | 70 | 242 | 19 / 66 |
| June | 27 / 81 | 17 / 63 | 32 | 3 | 68 | 277 | 22 / 72 |
| July | 30 / 86 | 20 / 68 | 24 | 2 | 66 | 310 | 25 / 77 |
| August | 30 / 86 | 20 / 68 | 35 | 3 | 67 | 293 | 26 / 79 |
| September | 27 / 81 | 17 / 63 | 73 | 6 | 70 | 228 | 24 / 75 |
| October | 22 / 72 | 13 / 55 | 119 | 8 | 74 | 181 | 22 / 72 |
| November | 17 / 63 | 8 / 46 | 148 | 11 | 76 | 122 | 19 / 66 |
| December | 14 / 57 | 5 / 41 | 141 | 11 | 75 | 104 | 16 / 61 |
Naples Weather in Winter (December to February)
Mild by European standards with daytime highs of 13 to 14°C (55 to 57°F) and overnight lows of 4 to 5°C (39 to 41°F). It is the wettest period: November through January each exceed 100mm of rain. December averages 141mm across 11 rain days. Humidity stays at 73 to 75%.
Sunshine is at the annual minimum (104 to 126 hours). Snow is extremely rare , the last measurable snowfall in central Naples was in 1956. Sea temperature drops to 14 to 15°C (57 to 59°F). Hotel rates are at their lowest, excluding the Christmas/New Year week when prices spike with Italian holidaymakers.
Naples Weather in Spring (March to May)
Spring is a rapid warm-up. March starts at 16°C (61°F) highs and 77mm of rain. By May, highs reach 23°C (73°F), rain drops to 49mm across just 5 days, and sunshine jumps to 242 hours. April and May are ideal for exploring Pompeii and Herculaneum, where the open archaeological sites become uncomfortably hot in summer. Sea temperature rises from 14°C (57°F) to 19°C (66°F), still too cool for most swimmers. Humidity is at its annual low of 70 to 72%.
Naples Weather in Summer (June to August)
Hot and dry. July and August average 30°C (86°F) highs with overnight lows of 20°C (68°F). Rainfall is minimal: July gets just 24mm across 2 rain days. Humidity is the lowest of the year at 66 to 67%, making the heat less oppressive than in more humid climates. July delivers 310 hours of sunshine, the sunniest month.
Sea temperature peaks at 26°C (79°F) in August, ideal for swimming. The archaeological sites at Pompeii and Herculaneum are punishingly hot from 12:00 to 16:00 , visit at opening time (09:00) and bring at least 2 liters of water per person. Many smaller shops and restaurants in Naples close for Ferragosto (August 15) and the surrounding week.
Naples Weather in Autumn (September to November)
September is a summer extension: 27°C (81°F) highs, 228 hours of sunshine, and a sea temperature of 24°C (75°F) that keeps swimming comfortable through mid-October. Rain increases from 73mm in September to 119mm in October and peaks at 148mm in November, the wettest month.
October is a transitional month , 前半 is often beautiful,后半 can be rainy. November brings 11 rain days and humidity rising to 76%. For sightseeing, mid-September through mid-October offers the best autumn window, combining warm temperatures with fewer crowds than summer.
Use these monthly numbers alongside our best time to visit Naples guide for specific travel windows.
