July
July · August · June
84climate match
Belgium · 1991–2020
Best time to visit
Waterloo.
July leads for comfortable weather in Waterloo: typically 23.4°C by day, 14.2°C at night, with 75 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortJuly
Typical high23.4°C
Typical low14.2°C
Rain in July75 mm
July
July · August · June
49climate match
September
September · May · June
83climate match
The weakest month is January, scoring 5 against July’s 84 — days reach only 6.2°C, 18° below the 24°C the score treats as ideal.
Month by month
The whole year,
without the guesswork.
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
Jan
56.2° / 1.2°
Feb
97.2° / 1.5°
Mar
2511.1° / 3.4°
Apr
4615° / 5.8°
May
6218.6° / 9.3°
Jun
7221.2° / 12.1°
Jul
8423.4° / 14.2°
Aug
8123.1° / 14°
Sep
6819.7° / 11.2°
Oct
4715° / 8.2°
Nov
219.9° / 4.3°
Dec
56.4° / 1.7°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 6.2°C | 1.2°C | 78 mm | 13.2 | 8 h 25 | 5 | Good coverage |
| February | 7.2°C | 1.5°C | 62 mm | 12.1 | 9 h 56 | 9 | Good coverage |
| March | 11.1°C | 3.4°C | 66 mm | 11.6 | 11 h 42 | 25 | Good coverage |
| April | 15°C | 5.8°C | 50 mm | 9.4 | 13 h 43 | 46 | Good coverage |
| May | 18.6°C | 9.3°C | 62 mm | 10 | 15 h 28 | 62 | Good coverage |
| June | 21.2°C | 12.1°C | 79 mm | 11 | 16 h 28 | 72 | Good coverage |
| July | 23.4°C | 14.2°C | 75 mm | 10.4 | 16 h 04 | 84 | Good coverage |
| August | 23.1°C | 14°C | 91 mm | 10 | 14 h 32 | 81 | Good coverage |
| September | 19.7°C | 11.2°C | 67 mm | 9.8 | 12 h 33 | 68 | Good coverage |
| October | 15°C | 8.2°C | 66 mm | 10.7 | 10 h 36 | 47 | Good coverage |
| November | 9.9°C | 4.3°C | 72 mm | 11.8 | 8 h 52 | 21 | Good coverage |
| December | 6.4°C | 1.7°C | 101 mm | 15 | 7 h 59 | 5 | Good coverage |
What has changed
Waterloo runs +1.6°C
on the 1961–1990 baseline.
Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.
Jan
+1.1
Feb—
Mar
+2.3
Apr
+2.1
May
+1.1
Jun
+2.0
Jul
+1.3
Aug
+1.5
Sep
+1.9
Oct
+1.1
Nov—
Dec
+1.6
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 15.3°C16 Jan 1947 | -21.1°C25 Jan 1881 | 37 mm15 Jan 1918 | 144 mm1995 · driest 3 mm in 1997 | 194 |
| February | 20.2°C26 Feb 2019 | -18.3°C7 Feb 1895 | 31 mm20 Feb 2002 | 149 mm1946 · driest 2 mm in 2005 | 194 |
| March | 24.2°C29 Mar 1968 | -13.6°C14 Mar 1845 | 29 mm26 Mar 1882 | 138 mm1988 · driest 2 mm in 2005 | 193 |
| April | 28.7°C17 Apr 1949 | -5.0°C9 Apr 1837 | 37 mm24 Apr 1903 | 131 mm1903 · driest 0 mm in 2007 | 193 |
| May | 34.1°C24 May 1922 | -2.2°C8 May 1944 | 47 mm1 May 1978 | 146 mm1965 · driest 3 mm in 2001 | 193 |
| June | 38.8°C27 Jun 1947 | 0.3°C1 Jun 1936 | 66 mm10 Jun 1895 | 154 mm1963 · driest 6 mm in 2003 | 193 |
| July | 39.7°C25 Jul 2019 | 4.4°C3 Jul 1921 | 72 mm10 Jul 1942 | 197 mm1942 · driest 2 mm in 1885 | 193 |
| August | 36.5°C19 Aug 1932 | 4.7°C27 Aug 1833 | 60 mm23 Aug 2011 | 231 mm1996 · driest 8 mm in 2018 | 192 |
| September | 34.9°C4 Sep 1929 | 0.0°C24 Sep 1931 | 48 mm20 Sep 1960 | 199 mm1984 · driest 2 mm in 1895 | 192 |
| October | 27.8°C6 Oct 1921 | -6.8°C28 Oct 1931 | 51 mm7 Oct 1982 | 227 mm1932 · driest 1 mm in 2004 | 192 |
| November | 20.4°C7 Nov 1955 | -12.8°C27 Nov 1890 | 60 mm3 Nov 1940 | 175 mm1991 · driest 4 mm in 2011 | 192 |
| December | 16.7°C16 Dec 1989 | -17.7°C9 Dec 1879 | 53 mm6 Dec 1900 | 172 mm1999 · driest 10 mm in 1933 | 193 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 0 | 0 | 8 | 2 |
| February | 0 | 0 | 7 | 1 |
| March | 0 | 0 | 4 | 1 |
| April | <1 | 0 | 1 | <1 |
| May | 3 | <1 | 0 | 2 |
| June | 5 | <1 | 0 | 2 |
| July | 10 | 2 | 0 | 3 |
| August | 8 | 2 | 0 | 2 |
| September | 2 | <1 | 0 | 1 |
| October | <1 | 0 | <1 | 1 |
| November | 0 | 0 | 3 | 2 |
| December | 0 | 0 | 7 | 2 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 42% | 5% | 55% | 1.4–7.7°C |
| February | 0% | 39% | 4% | 49% | 3.2–9.5°C |
| March | 1% | 36% | 4% | 46% | 7.0–12.7°C |
| April | 9% | 36% | 4% | 47% | 11.4–16.7°C |
| May | 28% | 34% | 5% | 44% | 15.7–20.5°C |
| June | 44% | 35% | 7% | 45% | 19.0–23.7°C |
| July | 54% | 36% | 8% | 46% | 20.5–25.6°C |
| August | 54% | 35% | 7% | 45% | 20.3–24.5°C |
| September | 33% | 34% | 6% | 45% | 17.2–21.7°C |
| October | 7% | 37% | 7% | 50% | 12.4–16.5°C |
| November | <1% | 42% | 7% | 55% | 6.6–11.0°C |
| December | 0% | 43% | 6% | 58% | 2.5–8.4°C |
A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.
The evidence behind this page
Nearby, measured,
and named.
- Place identity
- GeoNames 2783985
- NOAA station
- BE000006447 · UCCLE
- Station distance
- 10.1 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 21 usable years
- Daylight
- Calculated from latitude 50.71°, 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.