Your September weather guide
WarmWeather in Lake Garda in September
September is a good choice for Lake Garda if you want warm rather than hot weather and can keep your plans flexible. Average afternoon highs are around 23°C, with nights near 16°C, so light clothes work by day but an evening layer earns its place. The catch is rain: expect about 10 rainy days across the month. For a UK traveller, it offers a warmer September break, not a dependable week of uninterrupted sunshine.
Long-term climate averages for Desenzano del Garda (south shore), not a forecast · 1991-2020
Lake Garda, month by month
Your snapshot
At a glance
The useful details for Desenzano del Garda (south shore).
- Average daytime high
- 22.7°C
- 9 in 10 days stay below 27°C
- Average night-time low
- 16.2°C
- coldest 10% of nights: 13°C or lower
- Compared with London
- +4.1°C
- London averages 18.6°C in September
- Sunshine per day (est.)
- 6.3h
- 51% of 12.3 h of daylight
- Rainy days (1 mm+)
- 11
- 103 mm over the month
- Humidity
- 73%
- Days over 25°C
- 24%
- 0% over 30°C
- Record high 1991-2020
- 30.3°C
- 2015-09-01
- Record low 1991-2020
- 9.0°C
- 1993-09-29
- Flight from London
- ≈ 2 h
- 1012 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 September compares
September is the 4th warmest month of the year in Lake Garda and ranks 125th of 134 destinations we compare for September - see where else is hot in September. Within Italy it is 15th of 16 (Italy in September). Against London's average high of 18.6°C in September, Lake Garda is 4.1°C warmer by day and 5.0°C warmer at night.
Daytime and night-time in September
The typical September day in Lake Garda peaks at 22.7°C, but that is an average: the warmest 10% of days reach 26.8°C or more. Roughly 1 in 4 days top 25°C and 1 in 250 pass 30°C. Nights average 16.2°C; one night in ten drops to 12.6°C or lower, so pack a layer for evenings. Between 1991 and 2020 the hottest September day here reached 30.3°C (2015-09-01) and the coldest night 9.0°C (1993-09-29).
Rain in September
Wet (more than 8 rainy days): about 11 days with 1 mm or more, 103 mm in total. Year to year it varies a lot - the wettest September was 1998 with 223 mm, the driest 1997 with 18 mm. Humidity averages 73%.
Sunshine and daylight
Around 6.3 hours of sunshine a day (estimated from cloud cover), 12.3 hours of daylight: the sun rises about 06:56 and sets about 19:30 local time in mid-September. Average cloud cover is 48%.
Is September a good time to visit Lake Garda?
It is a reasonable choice: warm days but expect showers. The best months for Lake Garda on our scoring are July, August, June; months averaging 25°C or more: Jun, Jul, Aug.
Comfortable warmth, with a layer for evenings
The typical daytime temperature suits spending time outdoors without planning everything around intense midday heat. There is still scope for warmer afternoons: 24% of days reach 25°C, while the warmest 10% reach around 27°C or more. That makes light tops and trousers a sensible starting point, with sun protection for brighter spells. Do not pack as though every day will feel like high summer, though. The coolest 10% of nights fall to around 13°C or below, so a jumper or light jacket is useful if you plan to sit outside after dark. September suits travellers who value comfortable daytime warmth more than consistently hot weather.
Rain is the main compromise
Rain needs a proper place in your plans rather than being treated as a remote possibility. About 10 days have measurable rain, so bring a waterproof jacket and shoes you are comfortable wearing in wet weather. That does not mean those days are washouts, but it does make a rigid schedule of outdoor plans less appealing. Sunshine averages about 6.3 hours out of 12.3 hours of daylight: there is room for bright spells, without a promise of clear skies throughout the day. Keep outdoor plans flexible and check the forecast before committing. If reliable dry weather is your main reason for travelling, September's wet profile is a meaningful drawback.
A little perspective
Lake Garda through the year
September is highlighted. See how it compares with the rest of the year.
| Month | Day | Night | Sun/day | Rain mm | Rainy days | Days 25°C+ |
|---|---|---|---|---|---|---|
| January | 7.1°C | 1.0°C | 3.9 | 51 | 7 | 0% |
| February | 9.0°C | 1.4°C | 4.7 | 55 | 7 | 0% |
| March | 13.3°C | 3.8°C | 5.5 | 64 | 9 | 0% |
| April | 17.0°C | 7.4°C | 5.8 | 87 | 12 | 1% |
| May | 21.4°C | 12.0°C | 6.4 | 101 | 13 | 15% |
| Junebest | 25.5°C | 16.6°C | 7.8 | 91 | 12 | 55% |
| Julybest | 27.9°C | 19.5°C | 8.8 | 79 | 10 | 83% |
| Augustbest | 27.7°C | 20.0°C | 8.0 | 92 | 11 | 80% |
| SeptemberSelected | 22.7°C | 16.2°C | 6.3 | 103 | 11 | 24% |
| October | 17.5°C | 11.6°C | 4.2 | 109 | 11 | 1% |
| November | 11.9°C | 6.7°C | 3.3 | 113 | 11 | 0% |
| December | 7.6°C | 2.4°C | 3.6 | 69 | 8 | 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
Best months here
On warmth, low rainfall and sunshine, start with these.
Keep exploring
Similar in September
Closest matches on daytime temperature, sea temperature and sunshine, in other countries.
Croatia · 23°C by day · sea 23°C
Pula
Bulgaria · 23°C by day · sea 23°C
Sunny Beach
France · 24°C by day · sea 23°C
Nice
United States · 24°C by day · sea 21°C
New York
Portugal · 24°C by day · sea 18°C
Porto
A little more detail
Lake Garda in September FAQs
Plain answers, grounded in the averages.
Is Lake Garda hot in September?
Lake Garda is warm in September: the average daytime high is 22.7°C and nights average 16.2°C. Roughly 1 in 4 September days reach 25°C.
How much does it rain in Lake Garda in September?
Lake Garda sees about 11 rainy days (1 mm or more) and 103 mm of rain in a typical September. The wettest September between 1991 and 2020 was 1998 (223 mm) and the driest was 1997 (18 mm).
How sunny is Lake Garda in September?
Lake Garda gets around 6.3 hours of sunshine a day in September out of 12.3 hours of daylight (estimated from average cloud cover).
How does Lake Garda compare with the UK in September?
Lake Garda is on average 4.1°C warmer than London by day in September (22.7°C against 18.6°C).
What is the hottest September on record in Lake Garda?
Between 1991 and 2020 the hottest September day in Lake Garda reached 30.3°C on 2015-09-01, and the coldest night dropped to 9.0°C on 1993-09-29.
Is Lake Garda warmer than London in September?
Yes. Lake Garda's average daytime high is 22.7°C, compared with 18.6°C in London, a difference of 4.1°C. That is a useful step up in warmth for outdoor days, although it does not remove the need for waterproofs or an evening layer.
Is September the best month to go?
July, August and June rate more highly overall. September is still a reasonable choice if warm days are enough and you can work around rain. It is less convincing if your priority is consistently hot weather or keeping all your plans outdoors.
About these averages
ERA5-Land climate reanalysis via Open-Meteo (11 km grid), 1991-2020
Averages computed from daily values at Desenzano del Garda (Desenzano del Garda (south shore)). 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