August
Other strong months: June and July
89/100 weather score
France · 1991–2020
Best time to visit
Aulnay-sous-Bois
For Aulnay-sous-Bois, August has the most comfortable weather in our climate comparison. Typical daytime highs are 25.5°C, nights average 14.9°C, and rainfall totals about 49 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.
Best all-round monthAugust
Typical daytime high25.5°C
Typical night-time low14.9°C
August rainfall49 mm
May
Other strong months: September and April
88/100 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.
5 months fit your choices for Aulnay-sous-Bois
December has the lowest comfort score at 16 out of 100, compared with August at 89. The main reason is that days reach only 8.2°C, 16° below the 24°C the score treats as ideal.
Quick answers
Planning a trip to Aulnay-sous-Bois?
These answers come from the same measured monthly climate record shown on this page.
When is the best time to visit Aulnay-sous-Bois?
August is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 25.5°C and 49 mm of rain.
What is the hottest month in Aulnay-sous-Bois?
July is hottest in this record, with a typical daytime high of 25.9°C and a night-time low of 15.2°C.
Which month has the least rain?
March has the lowest monthly rainfall total at 38 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 | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 7.7°C | 2.4°C | 42 mm | 8.9 | 8 h 39 | 17 | Good coverage |
| February | 8.9°C | 1.9°C | 40 mm | 8.5 | 10 h 04 | 21 | Good coverage |
| March | 12.8°C | 4.3°C | 38 mm | 8.7 | 11 h 43 | 38 | Strong coverage |
| April | 16.6°C | 6.6°C | 41 mm | 7.7 | 13 h 37 | 55 | Good coverage |
| May | 20.1°C | 10.2°C | 62 mm | 8.6 | 15 h 15 | 70 | Good coverage |
| June | 23.1°C | 13.1°C | 48 mm | 8 | 16 h 10 | 87 | Good coverage |
| July | 25.9°C | 15.2°C | 51 mm | 7 | 15 h 48 | 87 | Good coverage |
| August | 25.5°C | 14.9°C | 49 mm | 7.3 | 14 h 23 | 89 | Good coverage |
| September | 21.7°C | 11.8°C | 40 mm | 7 | 12 h 31 | 82 | Good coverage |
| October | 16.7°C | 8.6°C | 52 mm | 8.9 | 10 h 42 | 57 | Good coverage |
| November | 11.3°C | 4.9°C | 49 mm | 9.4 | 9 h 04 | 32 | Strong coverage |
| December | 8.2°C | 2.6°C | 57 mm | 10.8 | 8 h 15 | 16 | Strong coverage |
What has changed
Recent daytime highs are
2.1°C warmer in Aulnay-sous-Bois.
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
+1.5
Feb
+1.2
Mar
+2.8
Apr
+2.4
May
+2.2
Jun—
Jul
+2.7
Aug
+2.5
Sep
+2.4
Oct
+1.7
Nov
+1.5
Dec
+2.2
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 16.1°C5 Jan 1999 | -14.6°C23 Jan 1940 | 31 mm21 Jan 1995 | 118 mm1988 · driest 4 mm in 1997 | 121 |
| February | 21.4°C28 Feb 1960 | -14.7°C2 Feb 1956 | 35 mm2 Feb 1941 | 117 mm1970 · driest 0 mm in 2004 | 122 |
| March | 25.7°C25 Mar 1955 | -8.6°C7 Mar 1971 | 31 mm13 Mar 1980 | 116 mm1979 · driest 0 mm in 1953 | 121 |
| April | 30.2°C18 Apr 1949 | -3.2°C6 Apr 1911 | 30 mm9 Apr 2022 | 137 mm1993 · driest 2 mm in 1954 | 121 |
| May | 34.8°C24 May 1922 | 0.2°C3 May 1945 | 68 mm31 May 1992 | 134 mm2016 · driest 1 mm in 2011 | 121 |
| June | 37.6°C26 Jun 1947 | 4.2°C1 Jun 1962 | 58 mm24 Jun 1960 | 143 mm1997 · driest 1 mm in 1921 | 121 |
| July | 42.1°C25 Jul 2019 | 6.0°C3 Jul 1907 | 82 mm2 Jul 1995 | 168 mm1972 · driest 6 mm in 1949 | 121 |
| August | 37.7°C9 Aug 1911 | 6.9°C23 Aug 1909 | 96 mm24 Aug 1987 | 162 mm1931 · driest 1 mm in 2016 | 121 |
| September | 35.6°C9 Sep 1911 | 2.7°C20 Sep 1952 | 40 mm14 Sep 1942 | 144 mm1975 · driest 0 mm in 2003 | 122 |
| October | 28.5°C1 Oct 2011 | -3.0°C30 Oct 1955 | 74 mm17 Oct 1920 | 153 mm1981 · driest 8 mm in 1969 | 122 |
| November | 21.3°C8 Nov 2015 | -8.9°C28 Nov 1921 | 39 mm20 Nov 1965 | 131 mm1944 · driest 1 mm in 2003 | 123 |
| December | 17.1°C16 Dec 1989 | -12.9°C20 Dec 1938 | 44 mm6 Dec 1904 | 146 mm1999 · driest 0 mm in 2002 | 123 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 7 | <1 |
| February | 0 | 0 | 6 | <1 |
| March | 0 | 0 | 3 | <1 |
| April | 1 | 0 | <1 | 1 |
| May | 5 | <1 | 0 | 2 |
| June | 8 | 2 | 0 | 1 |
| July | 15 | 5 | 0 | 1 |
| August | 14 | 4 | 0 | 2 |
| September | 5 | <1 | 0 | 1 |
| October | <1 | 0 | <1 | 2 |
| November | 0 | 0 | 3 | 1 |
| December | 0 | 0 | 6 | 1 |
The best month has moved. On the 1961–1990 numbers the strongest month here was August (scoring 97); on 2011–2025 it is July (91). 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 | 0% | 33% | 3% | 45% | 3.3–9.4°C |
| February | <1% | 32% | 3% | 42% | 5.0–11.2°C |
| March | 3% | 30% | 2% | 41% | 8.8–14.3°C |
| April | 13% | 29% | 4% | 36% | 13.1–18.1°C |
| May | 35% | 31% | 5% | 40% | 17.1–21.9°C |
| June | 56% | 28% | 5% | 33% | 20.4–24.5°C |
| July | 68% | 26% | 5% | 29% | 22.3–28.1°C |
| August | 69% | 25% | 4% | 30% | 22.2–26.9°C |
| September | 48% | 26% | 5% | 33% | 18.8–23.7°C |
| October | 12% | 30% | 5% | 38% | 13.8–18.0°C |
| November | <1% | 33% | 4% | 44% | 8.0–12.4°C |
| December | 0% | 34% | 4% | 47% | 4.5–9.8°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 3036145
- NOAA station
- FRM00007150 · LE BOURGET
- Station distance
- 5.9 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 19 usable years
- Daylight
- Calculated from latitude 48.94°, mid-month, sunrise to sunset including refraction. Not a station measurement.
- 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 Aulnay-sous-Bois 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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