September
Other strong months: June and July
90/100 weather score
France · 1991–2020
Best time to visit
Castres
For Castres, September has the most comfortable weather in our climate comparison. Typical daytime highs are 24.8°C, nights average 13.9°C, and rainfall totals about 46 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.
Best all-round monthSeptember
Typical daytime high24.8°C
Typical night-time low13.9°C
September rainfall46 mm
October
Other strong months: May and April
89/100 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 Castres
January has the lowest comfort score at 23 out of 100, compared with September at 90. The main reason is that days reach only 9.8°C, 14° below the 24°C the score treats as ideal.
Quick answers
Planning a trip to Castres?
These answers come from the same measured monthly climate record shown on this page.
When is the best time to visit Castres?
September is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 24.8°C and 46 mm of rain.
What is the hottest month in Castres?
August is hottest in this record, with a typical daytime high of 28.6°C and a night-time low of 17.1°C.
Which month has the least rain?
February has the lowest monthly rainfall total at 37 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 | 9.8°C | 2.8°C | 52 mm | 9.2 | 9 h 16 | 23 | Strong coverage |
| February | 11.3°C | 3°C | 37 mm | 7.8 | 10 h 25 | 32 | Strong coverage |
| March | 15°C | 5.5°C | 45 mm | 8.2 | 11 h 47 | 47 | Strong coverage |
| April | 17.7°C | 7.8°C | 65 mm | 9.3 | 13 h 21 | 56 | Strong coverage |
| May | 21.5°C | 11.4°C | 74 mm | 9.9 | 14 h 41 | 74 | Strong coverage |
| June | 25.7°C | 15°C | 64 mm | 7.1 | 15 h 25 | 87 | Strong coverage |
| July | 28.2°C | 17°C | 40 mm | 5.7 | 15 h 07 | 79 | Strong coverage |
| August | 28.6°C | 17.1°C | 45 mm | 5.9 | 13 h 59 | 77 | Strong coverage |
| September | 24.8°C | 13.9°C | 46 mm | 6.6 | 12 h 27 | 90 | Strong coverage |
| October | 19.8°C | 10.8°C | 54 mm | 7.5 | 10 h 56 | 72 | Strong coverage |
| November | 13.6°C | 6.2°C | 55 mm | 10 | 9 h 36 | 41 | Strong coverage |
| December | 10.5°C | 3.5°C | 49 mm | 8.7 | 8 h 57 | 28 | Strong coverage |
What has changed
Recent daytime highs are
1.9°C warmer in Castres.
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
+0.8
Feb
+1.1
Mar
+2.0
Apr
+2.5
May
+1.9
Jun
+2.8
Jul
+1.8
Aug
+2.9
Sep
+1.5
Oct
+2.0
Nov
+1.7
Dec
+2.3
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 21.2°C15 Jan 1955 | -18.6°C16 Jan 1985 | 45 mm9 Jan 2004 | 149 mm1955 · driest 2 mm in 1993 | 80 |
| February | 24.1°C27 Feb 2019 | -19.2°C15 Feb 1956 | 59 mm12 Feb 1990 | 114 mm2026 · driest 2 mm in 1949 | 80 |
| March | 27.1°C21 Mar 1990 | -8.4°C1 Mar 2005 | 42 mm22 Mar 1971 | 118 mm2006 · driest 0 mm in 1961 | 80 |
| April | 30.0°C13 Apr 1949 | -3.0°C13 Apr 1958 | 44 mm23 Apr 1988 | 171 mm1988 · driest 1 mm in 1955 | 80 |
| May | 34.5°C28 May 2026 | -0.8°C1 May 1960 | 55 mm13 May 1988 | 180 mm1977 · driest 3 mm in 2022 | 80 |
| June | 40.2°C27 Jun 2019 | 4.0°C2 Jun 1962 | 62 mm20 Jun 1957 | 263 mm1992 · driest 4 mm in 1950 | 80 |
| July | 40.2°C8 Jul 1982 | 7.6°C8 Jul 1954 | 83 mm7 Jul 1977 | 185 mm1977 · driest 2 mm in 2003 | 79 |
| August | 42.4°C23 Aug 2023 | 5.5°C30 Aug 1986 | 57 mm26 Aug 1983 | 152 mm1983 · driest 9 mm in 1998 | 79 |
| September | 35.3°C8 Sep 1966 | 1.9°C27 Sep 1972 | 51 mm23 Sep 1993 | 151 mm1993 · driest 0 mm in 1985 | 79 |
| October | 33.0°C1 Oct 2023 | -3.0°C29 Oct 1949 | 69 mm11 Oct 2006 | 162 mm2004 · driest 8 mm in 1957 | 79 |
| November | 24.3°C1 Nov 1968 | -7.5°C23 Nov 1988 | 44 mm6 Nov 2025 | 146 mm1996 · driest 3 mm in 2007 | 79 |
| December | 21.1°C17 Dec 1987 | -12.0°C28 Dec 1962 | 46 mm13 Dec 1981 | 168 mm1981 · driest 3 mm in 2015 | 79 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 8 | 1 |
| February | 0 | 0 | 7 | 1 |
| March | <1 | 0 | 2 | <1 |
| April | 1 | 0 | <1 | 2 |
| May | 7 | <1 | 0 | 2 |
| June | 17 | 6 | 0 | 2 |
| July | 23 | 12 | 0 | 1 |
| August | 24 | 11 | 0 | 2 |
| September | 14 | 4 | 0 | 1 |
| October | 3 | <1 | <1 | 1 |
| November | 0 | 0 | 3 | 2 |
| December | 0 | 0 | 7 | 1 |
| Month | Dry days reaching 20°C | Wet days | Days with heavy rain | Weeks with 3+ wet days | Typical high by year |
|---|---|---|---|---|---|
| January | 0% | 30% | 4% | 39% | 7.4–11.9°C |
| February | <1% | 29% | 4% | 35% | 8.3–14.1°C |
| March | 7% | 30% | 4% | 40% | 12.4–16.7°C |
| April | 21% | 31% | 6% | 42% | 14.7–19.7°C |
| May | 46% | 31% | 7% | 39% | 18.4–23.0°C |
| June | 69% | 25% | 6% | 28% | 22.3–28.2°C |
| July | 82% | 17% | 4% | 14% | 25.3–30.4°C |
| August | 80% | 19% | 5% | 19% | 25.0–30.0°C |
| September | 71% | 22% | 4% | 23% | 22.0–26.9°C |
| October | 42% | 24% | 4% | 27% | 17.3–21.8°C |
| November | 4% | 31% | 5% | 38% | 10.9–15.7°C |
| December | <1% | 30% | 5% | 38% | 7.4–12.4°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 3028263
- NOAA station
- FR000007630 · TOULOUSE-BLAGNAC
- Station distance
- 69.4 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 30 usable years
- Daylight
- Calculated from latitude 43.61°, 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 Castres 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.
How travel partnerships will work