Your August weather guide
HotWeather in Rome in August
August is a good time for Rome if you enjoy hot weather and can keep your plans flexible around the heat. Average highs are around 31°C, nights stay near 20°C, and there are about 4 rainy days. It is Rome's warmest month, so the catch is comfort rather than frequent rain. For a UK traveller, this suits a slower pace with shaded breaks better than long stretches of walking through the middle of the day.
Long-term climate averages for Rome, not a forecast · 1991-2020
Rome, month by month
Your snapshot
At a glance
The useful details for Rome.
- Average daytime high
- 30.6°C
- 9 in 10 days stay below 34°C
- Average night-time low
- 20.1°C
- coldest 10% of nights: 18°C or lower
- Compared with London
- +9.2°C
- London averages 21.4°C in August
- Sea temperature
- 25.7°C
- year to year: 25°C to 27°C
- Sunshine per day (est.)
- 10.7h
- 78% of 13.7 h of daylight
- Rainy days (1 mm+)
- 4
- 22 mm over the month
- Humidity
- 65%
- Days over 25°C
- 96%
- 60% over 30°C
- Record high 1991-2020
- 39.3°C
- 2017-08-02
- Record low 1991-2020
- 13.5°C
- 1995-08-29
- Flight from London
- ≈ 2 h 30 min
- 1411 km, short-haul (estimate for a direct flight)
Records are observed extremes within 1991-2020, not typical holiday conditions. Warm-day percentages are shares of days, not day counts.
How August compares
August is the 1st warmest month of the year in Rome and ranks 33rd of 134 destinations we compare for August - see where else is hot in August. Within Italy it is 2nd of 16 (Italy in August). Against London's average high of 21.4°C in August, Rome is 9.2°C warmer by day and 6.6°C warmer at night.
Daytime and night-time in August
The typical August day in Rome peaks at 30.6°C, but that is an average: the warmest 10% of days reach 34.4°C or more. About 96% of days top 25°C and 1 in 2 pass 30°C. Nights average 20.1°C; one night in ten drops to 17.5°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest August day here reached 39.3°C (2017-08-02) and the coldest night 13.5°C (1995-08-29).
Rain in August
Some rain (4-8 rainy days): about 4 days with 1 mm or more, 22 mm in total. Year to year it varies a lot - the wettest August was 2002 with 107 mm, the driest 2011 with 1 mm. Humidity averages 65%.
Sea temperature in August
The sea averages 25.7°C - warm enough to swim (22°c+). Depending on the year it ranges from 24.8°C to 26.8°C. This is the warmest the sea gets here all year.
Sunshine and daylight
Around 10.7 hours of sunshine a day (estimated from cloud cover), 13.7 hours of daylight: the sun rises about 06:18 and sets about 20:11 local time in mid-August. Average cloud cover is 22%.
Is August a good time to visit Rome?
Yes - it is one of the better months: hot days, manageable rain and long sunny days. The best months for Rome on our scoring are July, August, June; months averaging 25°C or more: Jun, Jul, Aug, Sep.
Plan around the heat, not just the average
Daytime temperatures reach 30°C on 60% of days, so treat proper summer heat as a likely part of your trip rather than an occasional bonus. The hottest days can reach 34.4°C or more, making an ambitious outdoor schedule uncomfortable. Put your longer walks earlier in the day, leave room for an indoor break at midday and head out again when the sun is lower. Pack loose, lightweight clothing, a hat and comfortable footwear, and keep water handy. Average night lows of 20.1°C mean evenings are warm rather than reliably refreshing. If heat disrupts your sleep, accommodation with air conditioning is a sensible priority.
Plenty of sunshine, but leave room for rain
With about 10.7 hours of sunshine within 13.7 hours of daylight, August gives you plenty of scope to shift outdoor plans away from midday. That sunshine also means shade and sun protection deserve more attention in your packing than heavy waterproofs. About 4 rainy days suggests rain is an occasional interruption, not the main constraint on your holiday, though dry weather is not guaranteed throughout your stay. Carry a compact umbrella or light rain layer and keep an indoor alternative in mind. August works well if you want mostly sunny conditions and do not mind adapting your day; it is less comfortable if you prefer to walk continuously without heat breaks.
A little perspective
Rome through the year
August is highlighted. See how it compares with the rest of the year.
| Month | Day | Night | Sea | Sun/day | Rain mm | Rainy days | Days 25°C+ |
|---|---|---|---|---|---|---|---|
| January | 11.6°C | 3.7°C | 14.7°C | 4.5 | 63 | 9 | 0% |
| February | 12.3°C | 3.7°C | 13.9°C | 5.4 | 72 | 9 | 0% |
| March | 15.2°C | 5.9°C | 13.9°C | 5.8 | 75 | 10 | 0% |
| April | 18.0°C | 8.6°C | 15.2°C | 6.5 | 78 | 11 | 1% |
| May | 22.4°C | 12.5°C | 18.4°C | 8.0 | 58 | 9 | 23% |
| Junebest | 27.0°C | 16.6°C | 22.1°C | 10.2 | 33 | 5 | 71% |
| Julybest | 30.2°C | 19.4°C | 24.7°C | 12.0 | 22 | 4 | 95% |
| AugustSelectedbest | 30.6°C | 20.1°C | 25.7°C | 10.7 | 22 | 4 | 96% |
| September | 25.4°C | 16.5°C | 23.9°C | 7.5 | 81 | 9 | 56% |
| October | 21.0°C | 13.0°C | 21.5°C | 5.5 | 116 | 11 | 7% |
| November | 16.1°C | 9.0°C | 18.9°C | 4.3 | 130 | 12 | 0% |
| December | 12.4°C | 5.1°C | 16.3°C | 4.4 | 92 | 11 | 0% |
Day = average daytime high, night = average night-time low, 1991-2020.Sun is hours per day; rainy days count 1 mm or more.
Day, night and sea
Monthly average temperatures, 1991-2020
- Day
- Night
- Sea
Best months here
On warmth, low rainfall and sunshine, start with these.
Keep exploring
Similar in August
Closest matches on daytime temperature, sea temperature and sunshine, in other countries.
A little more detail
Rome in August FAQs
Plain answers, grounded in the averages.
Is Rome hot in August?
Rome is hot in August: the average daytime high is 30.6°C and nights average 20.1°C. About 96% of August days reach 25°C or more.
Can you swim in the sea in Rome in August?
The sea around Rome averages 25.7°C in August, which is warm enough for most people to swim comfortably. Between 1991 and 2020 it ranged from 25°C to 27°C depending on the year.
How much does it rain in Rome in August?
Rome sees about 4 rainy days (1 mm or more) and 22 mm of rain in a typical August. The wettest August between 1991 and 2020 was 2002 (107 mm) and the driest was 2011 (1 mm).
How sunny is Rome in August?
Rome gets around 10.7 hours of sunshine a day in August out of 13.7 hours of daylight (estimated from average cloud cover).
How does Rome compare with the UK in August?
Rome is on average 9.2°C warmer than London by day in August (30.6°C against 21.4°C).
What is the hottest August on record in Rome?
Between 1991 and 2020 the hottest August day in Rome reached 39.3°C on 2017-08-02, and the coldest night dropped to 13.5°C on 1995-08-29.
How much hotter is Rome than London in August?
Rome's average daytime high is 30.6°C, compared with London's 21.4°C. That is a noticeable step up from a typical London August: pack for sustained heat and expect to need more shade and rest during outdoor days.
Is the sea warm enough for swimming?
Yes. If your Rome trip includes time by the sea, the average water temperature is 25.7°C, comfortably warm for swimming. The year-to-year range is 25°C to 27°C, so cold water is unlikely to be the drawback.
About these averages
ERA5-Land climate reanalysis via Open-Meteo (11 km grid) and NOAA Coral Reef Watch 5 km sea temperatures, 1991-2020
Averages computed from daily values at Rome. Sea temperature from the nearest 5 km sea cell, 26.6 km from that point. Sunshine hours are estimated from average cloud cover.Records are the highest and lowest daily values in that 30-year period, not all-time records. These are climate averages, not a forecast for your trip. How we measure holiday weather
- Hot · 25°C+
- Warm · 20°C to below 25°C
- Mild · 15°C to below 20°C
- Cool · below 15°C