Rome climate
Rome (Lazio, Italy) has a hot-summer Mediterranean climate (Köppen Csa). The average temperature over the year is 17 °C63 °F, and about 775 mm31 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Rome climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 1254 | 440 | 847 | 732.9 | 4 |
| Feb | 1355 | 440 | 948 | 773.0 | 4 |
| Mar | 1661 | 744 | 1153 | 692.7 | 1 |
| Apr | 2068 | 1050 | 1559 | 562.2 | 0 |
| May | 2476 | 1457 | 1966 | 572.2 | 0 |
| Jun | 3085 | 1865 | 2475 | 341.3 | 0 |
| Jul | 3392 | 2170 | 2781 | 261.0 | 0 |
| Aug | 3392 | 2171 | 2781 | 261.0 | 0 |
| Sep | 2882 | 1763 | 2373 | 702.7 | 0 |
| Oct | 2374 | 1456 | 1865 | 823.2 | 0 |
| Nov | 1864 | 1049 | 1456 | 1144.5 | 0 |
| Dec | 1356 | 542 | 949 | 913.6 | 3 |
| Year | 3392 | 440 | 1763 | 77531 | 13 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 81% | 60% | 1.8 | 9:27 |
| Feb | 79% | 56% | 2.8 | 10:32 |
| Mar | 76% | 54% | 4.0 | 11:49 |
| Apr | 72% | 50% | 5.5 | 13:18 |
| May | 68% | 44% | 6.6 | 14:32 |
| Jun | 62% | 30% | 7.5 | 15:12 |
| Jul | 55% | 18% | 7.6 | 14:56 |
| Aug | 55% | 21% | 6.6 | 13:51 |
| Sep | 64% | 37% | 4.8 | 12:25 |
| Oct | 73% | 45% | 3.3 | 10:59 |
| Nov | 80% | 56% | 2.1 | 9:45 |
| Dec | 81% | 55% | 1.6 | 9:08 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Rome is like
The warmest month is August, with an average high of 33 °C92 °F and a low of 21 °C71 °F. The coldest is January, when highs average 12 °C54 °F and lows 4 °C40 °F. Seasons are strongly marked: the warmest month is on average 19.1 °C34.5 °F warmer than the coldest.
Annual precipitation is moderate at about 775 mm31 in. The wettest three-month stretch is October–December, which brings 37% of the annual total. The wettest month is November (114 mm4.5 in), the driest is July (26 mm1.0 in).
Relative humidity ranges from 55% in August to 81% in January. The clearest skies (lowest average cloud amount, 18%) are typical of July. Average wind speed near the ground ranges from 8 km/h (5 mph) in June to 9 km/h (6 mph) in March. Daylight lasts from about 9.1 hours in December to 15.2 hours in June.
Best time to visit Rome
Based on these averages, the most comfortable months for sightseeing and outdoor activities are April–June and September and October: average highs of 20 °C68 °F to 30 °C85 °F with 34 mm1.3 in to 82 mm3.2 in of precipitation per month.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
Rome weather by month
- January12 °C54 °F / 4 °C40 °F
- February13 °C55 °F / 4 °C40 °F
- March16 °C61 °F / 7 °C44 °F
- April20 °C68 °F / 10 °C50 °F
- May24 °C76 °F / 14 °C57 °F
- June30 °C85 °F / 18 °C65 °F
- July33 °C92 °F / 21 °C70 °F
- August33 °C92 °F / 21 °C71 °F
- September28 °C82 °F / 17 °C63 °F
- October23 °C74 °F / 14 °C56 °F
- November18 °C64 °F / 10 °C49 °F
- December13 °C56 °F / 5 °C42 °F
What to pack for Rome
- Winter (December–February) — highs 1254 to 13 °C56 °F, lows 440 to 5 °C42 °F, about 80 mm3.2 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
- Spring (March–May) — highs 1661 to 24 °C76 °F, lows 744 to 14 °C57 °F, about 61 mm2.4 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 3085 to 33 °C92 °F, lows 1865 to 21 °C71 °F, about 29 mm1.1 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 1864 to 28 °C82 °F, lows 1049 to 17 °C63 °F, about 89 mm3.5 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
How Rome compares
Of the 37 places in Italy covered by World Climates, Rome is the 12th warmest by annual mean temperature and the 19th wettest by annual precipitation. See all of them on the Italy climate page.
Places in other countries with the most similar temperature and rainfall pattern: Split (Croatia, Csa), Elbasan (Albania, Csa) and Guelma (Algeria, Csa).
The same NASA POWER grid cell also contains Acilia-Castel Fusano-Ostia Antica (pop. 129,362) and Vatican City (pop. 829). Their long-term averages in this dataset are essentially the same as for Rome, so they do not have separate pages.
Nearby places
- Terni 75 km · 16 °C61 °F · 784 mm31 in
- Perugia 136 km · 13 °C56 °F · 801 mm32 in
- Pescara 153 km · 18 °C64 °F · 788 mm31 in
- Arezzo 182 km · 14 °C57 °F · 777 mm31 in
- Naples 187 km · 17 °C63 °F · 755 mm30 in
- San Marino 227 km · 12 °C53 °F · 770 mm30 in
- Salerno 234 km · 18 °C64 °F · 730 mm29 in
- Florence 234 km · 15 °C59 °F · 736 mm29 in
Frequently asked questions
What is the warmest month in Rome?
August is the warmest month in Rome, with an average high of 33 °C (92 °F) and an average low of 21 °C (71 °F).
What is the coldest month in Rome?
January is the coldest month, with an average high of 12 °C (54 °F) and an average low of 4 °C (40 °F).
When does it rain the most in Rome?
November is the wettest month with about 114 mm (4.5 in) of precipitation; July is the driest with about 26 mm (1.0 in).
What is the best time to visit Rome?
Judging by long-term averages, the most comfortable months are April–June and September and October.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 198 m, while Rome lies at about 20 m. Temperatures on this page were therefore adjusted by +1.2 °C2.1 °F using the standard lapse rate of 6.5 °C per 1,000 m.