May
Other strong months: June and September
87/100 weather score
Italy · 1991–2020
Best time to visit
Velletri
For Velletri, May has the most comfortable weather in our climate comparison. Typical daytime highs are 23.3°C, nights average 12.7°C, and rainfall totals about 60 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.
Best all-round monthMay
Typical daytime high23.3°C
Typical night-time low12.7°C
May rainfall60 mm
July
Other strong months: August and June
89/100 weather score
April
Other strong months: May and October
82/100 weather score
Make the answer personal
Choose the weather
that suits you.
Set the daytime temperature and rainfall you are comfortable with. We will show only the months that meet every choice, using the measured 1991–2020 averages below.
4 months fit your choices for Velletri
December has the lowest comfort score at 28 out of 100, compared with May at 87. The main reason is that days reach only 12.7°C, 11° below the 24°C the score treats as ideal.
Quick answers
Planning a trip to Velletri?
These answers come from the same measured monthly climate record shown on this page.
When is the best time to visit Velletri?
May is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 23.3°C and 60 mm of rain.
What is the hottest month in Velletri?
August is hottest in this record, with a typical daytime high of 31.5°C and a night-time low of 19.8°C.
Which month has the least rain?
July has the lowest monthly rainfall total at 22 mm.
Is this a weather forecast?
No. These are long-term measured averages from 1991–2020. Check a current forecast before you travel.
Month by month
See how the weather
changes through the year.
The bars combine daytime temperature, night-time temperature and rainfall. The figures are measured historical averages, not a forecast for a particular trip.
| Month | Day | Night | Rain | Wet days | Sea | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|---|
| January | 12°C | 3.3°C | 67 mm | 7.6 | 14.8°C | 9 h 28 | 31 | Good coverage |
| February | 13.1°C | 3.3°C | 63 mm | 7.5 | 14.1°C | 10 h 32 | 35 | Strong coverage |
| March | 15.9°C | 5.8°C | 59 mm | 6.8 | 14.1°C | 11 h 48 | 50 | Strong coverage |
| April | 18.9°C | 8.5°C | 73 mm | 7.9 | 15.4°C | 13 h 16 | 62 | Good coverage |
| May | 23.3°C | 12.7°C | 60 mm | 5.9 | 18.4°C | 14 h 30 | 87 | Good coverage |
| June | 28.1°C | 16.7°C | 33 mm | 3.6 | 21.9°C | 15 h 11 | 83 | Good coverage |
| July | 31.1°C | 19.3°C | 22 mm | 2.3 | 24.6°C | 14 h 55 | 69 | Good coverage |
| August | 31.5°C | 19.8°C | 33 mm | 2.4 | 25.6°C | 13 h 51 | 67 | Good coverage |
| September | 26.9°C | 16°C | 71 mm | 6.6 | 23.7°C | 12 h 25 | 81 | Good coverage |
| October | 22.3°C | 12.3°C | 96 mm | 7.9 | 21.4°C | 11 h 01 | 77 | Good coverage |
| November | 16.9°C | 8.3°C | 116 mm | 9.5 | 18.8°C | 9 h 46 | 47 | Good coverage |
| December | 12.7°C | 4.8°C | 104 mm | 10.1 | 16.3°C | 9 h 10 | 28 | Good coverage |
What has changed
Recent daytime highs are
1.5°C warmer in Velletri.
Each bar shows the difference between the 2011–2025 average daytime high and the 1961–1990 average for the same month at the same station. A blank month does not have enough older observations for a reliable comparison.
Jan
+1.3
Feb
+1.0
Mar
+1.2
Apr
+1.7
May
+1.0
Jun
+2.5
Jul
+1.7
Aug
+2.4
Sep
+1.3
Oct
+1.6
Nov
+1.4
Dec
+1.1
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 20.8°C31 Jan 1965 | -11.0°C11 Jan 1985 | 63 mm13 Jan 1978 | 193 mm2001 · driest 0 mm in 2000 | 73 |
| February | 22.4°C18 Feb 2014 | -6.9°C16 Feb 1956 | 66 mm26 Feb 1984 | 169 mm1986 · driest 0 mm in 2000 | 74 |
| March | 26.6°C31 Mar 1981 | -6.5°C2 Mar 1963 | 57 mm16 Mar 2011 | 151 mm2011 · driest 0 mm in 2000 | 74 |
| April | 30.0°C30 Apr 2013 | -2.4°C9 Apr 1956 | 48 mm24 Apr 1999 | 235 mm1974 · driest 0 mm in 2009 | 74 |
| May | 34.2°C27 May 2008 | 1.8°C2 May 1962 | 77 mm6 May 2013 | 155 mm2013 · driest 0 mm in 2010 | 74 |
| June | 39.3°C27 Jun 2022 | 5.6°C6 Jun 1962 | 94 mm15 Jun 2014 | 216 mm2014 · driest 0 mm in 2009 | 74 |
| July | 39.4°C28 Jul 1983 | 9.1°C20 Jul 1966 | 66 mm15 Jul 2002 | 89 mm2002 · driest 0 mm in 1988 | 73 |
| August | 40.6°C4 Aug 1981 | 9.3°C23 Aug 1963 | 54 mm28 Aug 2002 | 133 mm2002 · driest 0 mm in 2011 | 73 |
| September | 38.4°C5 Sep 1982 | 0.0°C30 Sep 2004 | 132 mm25 Sep 1951 | 212 mm1951 · driest 3 mm in 1954 | 72 |
| October | 31.9°C9 Oct 2023 | 0.8°C25 Oct 1981 | 120 mm2 Oct 1978 | 262 mm1978 · driest 0 mm in 2009 | 72 |
| November | 26.1°C7 Nov 2021 | -5.2°C29 Nov 1973 | 109 mm7 Nov 1997 | 246 mm1997 · driest 0 mm in 2009 | 72 |
| December | 20.8°C24 Dec 2002 | -5.6°C6 Dec 1964 | 71 mm11 Dec 2008 | 267 mm2008 · driest 0 mm in 2009 | 72 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 5 | 3 |
| February | 0 | 0 | 4 | 2 |
| March | 0 | 0 | <1 | 2 |
| April | <1 | 0 | <1 | 3 |
| May | 9 | <1 | 0 | 2 |
| June | 22 | 9 | 0 | 1 |
| July | 27 | 19 | 0 | <1 |
| August | 27 | 20 | 0 | 1 |
| September | 20 | 4 | 0 | 3 |
| October | 6 | 0 | 0 | 3 |
| November | <1 | 0 | <1 | 4 |
| December | 0 | 0 | 3 | 3 |
The best month has moved. On the 1961–1990 numbers the strongest month here was June (scoring 90); on 2011–2025 it is May (93). Both are scored the same way, from the same station — only the climate underneath changed.
| Month | Dry days reaching 20°C | Wet days | Days with heavy rain | Weeks with 3+ wet days | Typical high by year |
|---|---|---|---|---|---|
| January | <1% | 26% | 8% | 31% | 10.2–13.7°C |
| February | <1% | 28% | 7% | 36% | 11.0–15.4°C |
| March | 6% | 25% | 7% | 29% | 14.0–17.6°C |
| April | 30% | 27% | 8% | 33% | 16.5–20.3°C |
| May | 72% | 20% | 6% | 19% | 21.1–25.2°C |
| June | 87% | 13% | 4% | 10% | 25.4–29.8°C |
| July | 93% | 7% | 2% | 3% | 29.0–32.4°C |
| August | 91% | 9% | 3% | 6% | 28.9–33.1°C |
| September | 80% | 20% | 8% | 22% | 25.2–28.9°C |
| October | 62% | 25% | 10% | 29% | 20.7–23.7°C |
| November | 12% | 33% | 13% | 42% | 15.1–18.2°C |
| December | <1% | 30% | 10% | 39% | 11.4–14.3°C |
A dry day reaching 20°C records under 1 mm of rain. A wet day records at least 1 mm, while a heavy-rain day records at least 10 mm. The weekly figure is the share of seven-day periods containing three or more wet days. The final column shows the middle 80% of average daytime highs recorded for that month in individual years; a wider range means conditions have varied more from one year to another.
The evidence behind this page
Where these figures
come from.
- Place identity
- GeoNames 3164630
- NOAA station
- IT000016239 · ROMA CIAMPINO
- Station distance
- 19.4 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 23 usable years
- Daylight
- Calculated from latitude 41.69°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- Sea temperature
- NOAA OISST v2.1 1991–2020 monthly climatology, nearest open water 34 km from the place centre. A sheltered bay can run warmer than the open sea it is measured from.
- Important limit
- Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.
Next step
Choose your month.
Then plan the details.
The weather comparison for Velletri is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.
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