Lazio weather in September
September is one of the best months to visit Lazio: highs of 27°C (80°F) and about 70 mm (2.8 in) of rain on average. Nights average 16°C (61°F) and cloud cover 37% (NASA POWER, 2001–2025 averages). It is the 6th wettest month of the year and the 4th warmest. Compared with August, it is cooler and wetter; October brings highs of 22°C (71°F) and 82 mm (3.2 in) of rain.
Figures are long-term averages for Rome, the largest city in Lazio. See below for other places.
Is September a good time to visit Lazio?
best month Weather score 81/100.
Yes. September is one of the best months for weather in Lazio.
Does it rain a lot in Lazio in September?
Some rain is normal: about 70 mm (2.8 in) falls in an average September. It is the 6th wettest month of the year.
How warm is Lazio in September?
Days average 27°C (80°F) and nights 16°C (61°F).
Lazio weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 11°C (52°F) | 3°C (38°F) | 73 mm | 60% | least pleasant |
| February | 12°C (53°F) | 3°C (38°F) | 77 mm | 56% | least pleasant |
| March | 15°C (59°F) | 6°C (42°F) | 69 mm | 54% | fair |
| April | 19°C (66°F) | 9°C (48°F) | 56 mm | 50% | best |
| May | 23°C (74°F) | 13°C (55°F) | 57 mm | 44% | best |
| June | 28°C (83°F) | 17°C (63°F) | 34 mm | 30% | best |
| July | 32°C (89°F) | 20°C (68°F) | 26 mm | 18% | best |
| August | 32°C (90°F) | 20°C (69°F) | 26 mm | 21% | best |
| September | 27°C (80°F) | 16°C (61°F) | 70 mm | 37% | best |
| October | 22°C (71°F) | 12°C (54°F) | 82 mm | 45% | best |
| November | 16°C (62°F) | 9°C (47°F) | 114 mm | 56% | least pleasant |
| December | 12°C (54°F) | 4°C (40°F) | 91 mm | 55% | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months
Weather across Lazio in September
Weather can differ a lot within Lazio: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Rome | 27°C (80°F) | 16°C (61°F) | 70 mm | best |
| Acilia-Castel Fusano-Ostia Antica | 27°C (80°F) | 16°C (61°F) | 70 mm | best |
| Guidonia Montecelio | 27°C (80°F) | 16°C (61°F) | 70 mm | best |
| Lido di Ostia | 25°C (77°F) | 21°C (69°F) | 80 mm | fair |
| Fiumicino | 27°C (80°F) | 16°C (61°F) | 70 mm | best |
| Latina | 26°C (79°F) | 16°C (61°F) | 67 mm | best |
| Aprilia | 25°C (77°F) | 21°C (69°F) | 80 mm | fair |
| Velletri | 25°C (77°F) | 21°C (69°F) | 80 mm | fair |
| Nettuno | 25°C (77°F) | 21°C (69°F) | 80 mm | fair |
| Civitavecchia | 25°C (76°F) | 20°C (67°F) | 76 mm | fair |
| Viterbo | 25°C (78°F) | 15°C (58°F) | 73 mm | best |
| Anzio | 25°C (77°F) | 21°C (69°F) | 80 mm | fair |