Rome, Italy Climate
The warmest month is August, with an average high of 32°C; the coldest is February, with an average low of 4°C. A normal year brings 745 mm of precipitation.
Temperature through the year
The normal daily high and low. The line marks today.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
Normals for Sep 24
- Normal high
- 26°C
- Normal low
- 16°C
- Reanalysis high
- 30°Cin 1994
- Reanalysis low
- 11°Cin 2008
- Chance of a wet day
- 33%
- Daylight
- 12 h 05 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Warmest | Coldest | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | 12°C | 4°C | 18°C (2008) | -4°C (2017) | 59 mm | 9.3 |
| February | 12°C | 4°C | 19°C (1998) | -5°C (2018) | 68 mm | 8.5 |
| March | 15°C | 6°C | 24°C (2017) | -4°C (2005) | 59 mm | 9.3 |
| April | 19°C | 9°C | 27°C (2018) | -2°C (2003) | 60 mm | 9.0 |
| May | 23°C | 13°C | 32°C (2009) | 4°C (2019) | 53 mm | 9.3 |
| June | 28°C | 17°C | 37°C (2019) | 8°C (2006) | 36 mm | 6.0 |
| July | 32°C | 20°C | 39°C (2005) | 12°C (1991) | 22 mm | 3.1 |
| August | 32°C | 21°C | 41°C (2017) | 11°C (1995) | 28 mm | 6.2 |
| September | 27°C | 17°C | 37°C (2008) | 8°C (2002) | 72 mm | 9.0 |
| October | 22°C | 13°C | 30°C (2011) | 4°C (2012) | 96 mm | 9.3 |
| November | 17°C | 9°C | 26°C (2004) | -1°C (2016) | 108 mm | 12.0 |
| December | 13°C | 5°C | 19°C (2004) | -4°C (2010) | 84 mm | 12.4 |
| Year | 21°C | 11°C | 745 mm | 103 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
745 mm in a normal year, most in November.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Rome.
The muggiest month is July, when 5 percent of days are muggy or worse, with a mean dew point of 18°C or more.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | 4°C | 81% | 100% | 0% | 0% | 0% | 0% | 0% |
| February | 4°C | 78% | 100% | 0% | 0% | 0% | 0% | 0% |
| March | 6°C | 76% | 100% | 0% | 0% | 0% | 0% | 0% |
| April | 8°C | 73% | 100% | 0% | 0% | 0% | 0% | 0% |
| May | 11°C | 68% | 75% | 24% | 2% | 0% | 0% | 0% |
| June | 14°C | 62% | 31% | 46% | 22% | 1% | 0% | 0% |
| July | 15°C | 55% | 22% | 41% | 32% | 5% | 0% | 0% |
| August | 15°C | 54% | 17% | 42% | 37% | 5% | 0% | 0% |
| September | 13°C | 64% | 39% | 35% | 21% | 4% | 0% | 0% |
| October | 12°C | 73% | 59% | 29% | 11% | 0% | 0% | 0% |
| November | 8°C | 80% | 88% | 10% | 1% | 0% | 0% | 0% |
| December | 5°C | 81% | 99% | 1% | 0% | 0% | 0% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is July, with the sky 29 percent covered on average; the cloudiest is November, at 62 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is March, averaging 13.0 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 17, with 15 h 14 min of daylight; the shortest is Dec 16, with 9 h 08 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Rome in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Nearby
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.