August
August · July · June
83climate match
Canada · 1991–2020
Best time to visit
McMurdo.
August leads for comfortable weather in McMurdo: typically 24.7°C by day, 9.4°C at night, with 38 mm of rain. Based on measured 1991–2020 NOAA station history.
Best comfortAugust
Typical high24.7°C
Typical low9.4°C
Rain in August38 mm
July
July · August · June
53climate match
May
May · September · June
81climate match
The weakest month is January, scoring 5 against August’s 83 — days reach only -4.1°C, 28° 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
5-4.1° / -10.8°
Feb
5-0.1° / -9.6°
Mar
56.4° / -4.6°
Apr
3413.2° / -0.4°
May
6018.9° / 4.3°
Jun
7121.7° / 8.3°
Jul
8225.4° / 10.4°
Aug
8324.7° / 9.4°
Sep
6018.7° / 5.3°
Oct
219.9° / 0.3°
Nov
51.2° / -4.6°
Dec
5-4.3° / -10°
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | -4.1°C | -10.8°C | 42 mm | 9.2 | 8 h 21 | 5 | Strong coverage |
| February | -0.1°C | -9.6°C | 23 mm | 5.9 | 9 h 54 | 5 | Strong coverage |
| March | 6.4°C | -4.6°C | 29 mm | 6.8 | 11 h 42 | 5 | Strong coverage |
| April | 13.2°C | -0.4°C | 24 mm | 5.3 | 13 h 45 | 34 | Strong coverage |
| May | 18.9°C | 4.3°C | 36 mm | 7.8 | 15 h 31 | 60 | Strong coverage |
| June | 21.7°C | 8.3°C | 52 mm | 10.4 | 16 h 32 | 71 | Strong coverage |
| July | 25.4°C | 10.4°C | 40 mm | 8.4 | 16 h 08 | 82 | Strong coverage |
| August | 24.7°C | 9.4°C | 38 mm | 8.2 | 14 h 34 | 83 | Strong coverage |
| September | 18.7°C | 5.3°C | 41 mm | 7.8 | 12 h 34 | 60 | Strong coverage |
| October | 9.9°C | 0.3°C | 41 mm | 8.5 | 10 h 35 | 21 | Strong coverage |
| November | 1.2°C | -4.6°C | 55 mm | 9.3 | 8 h 49 | 5 | Strong coverage |
| December | -4.3°C | -10°C | 41 mm | 9.2 | 7 h 55 | 5 | Strong coverage |
What has changed
McMurdo runs +0.4°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
+2.2
Feb
-1.6
Mar
-0.2
Apr
-0.3
May
+1.3
Jun
0.0
Jul
+1.3
Aug
+1.0
Sep
+0.7
Oct
-0.2
Nov
0.0
Dec
+0.7
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 8.3°C25 Jan 1906 | -46.1°C15 Jan 1907 | 53 mm3 Jan 1918 | 146 mm1953 · driest 6 mm in 1949 | 119 |
| February | 12.2°C29 Feb 1968 | -39.4°C1 Feb 1950 | 57 mm23 Feb 1957 | 99 mm1972 · driest 0 mm in 1913 | 119 |
| March | 20.2°C30 Mar 2004 | -31.7°C3 Mar 1960 | 31 mm10 Mar 1903 | 94 mm1928 · driest 0 mm in 1919 | 118 |
| April | 28.9°C27 Apr 1939 | -19.4°C1 Apr 1935 | 54 mm18 Apr 1951 | 72 mm1951 · driest 0 mm in 1941 | 120 |
| May | 35.6°C30 May 1936 | -9.4°C1 May 1954 | 50 mm6 May 1966 | 86 mm2014 · driest 4 mm in 1938 | 120 |
| June | 41.0°C30 Jun 2021 | -6.7°C25 Jun 1918 | 41 mm17 Jun 2005 | 127 mm2005 · driest 5 mm in 1973 | 120 |
| July | 40.0°C17 Jul 1941 | -2.2°C17 Jul 1946 | 47 mm14 Jul 1915 | 121 mm1915 · driest 6 mm in 1910 | 119 |
| August | 37.8°C3 Aug 1951 | -2.8°C31 Aug 1931 | 38 mm26 Aug 1984 | 101 mm1976 · driest 3 mm in 1931 | 119 |
| September | 33.9°C1 Sep 1967 | -9.4°C23 Sep 1926 | 59 mm22 Sep 1903 | 110 mm1997 · driest 0 mm in 1945 | 119 |
| October | 25.6°C2 Oct 1952 | -18.3°C29 Oct 1935 | 55 mm25 Oct 1945 | 98 mm1939 · driest 2 mm in 1952 | 119 |
| November | 17.2°C4 Nov 1975 | -31.5°C28 Nov 1985 | 51 mm30 Nov 1902 | 154 mm1995 · driest 3 mm in 1936 | 119 |
| December | 10.0°C5 Dec 1939 | -43.9°C18 Dec 1924 | 58 mm4 Dec 1918 | 210 mm1933 · driest 3 mm in 1930 | 118 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 30 | <1 | 14 |
| February | 0 | 0 | 27 | <1 | 8 |
| March | 0 | 0 | 27 | <1 | 7 |
| April | <1 | 0 | 17 | <1 | 2 |
| May | 4 | <1 | 4 | <1 | <1 |
| June | 7 | 1 | <1 | 1 | 0 |
| July | 16 | 6 | 0 | <1 | 0 |
| August | 16 | 5 | 0 | <1 | 0 |
| September | 4 | <1 | 2 | 1 | 0 |
| October | 0 | 0 | 15 | <1 | 2 |
| November | 0 | 0 | 25 | 1 | 10 |
| December | 0 | 0 | 30 | <1 | 15 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 0% | 29% | 5% | 33% | -10.5–-1.6°C |
| February | 0% | 20% | 2% | 20% | -4.3–2.8°C |
| March | 0% | 16% | 1% | 11% | 3.3–8.6°C |
| April | 8% | 15% | 1% | 10% | 10.6–15.3°C |
| May | 38% | 19% | 2% | 18% | 16.5–21.6°C |
| June | 58% | 26% | 3% | 29% | 20.2–25.0°C |
| July | 73% | 21% | 3% | 19% | 22.9–29.0°C |
| August | 70% | 21% | 3% | 20% | 21.6–27.4°C |
| September | 38% | 21% | 3% | 19% | 15.6–22.4°C |
| October | 4% | 22% | 3% | 22% | 8.7–13.0°C |
| November | 0% | 26% | 4% | 29% | -1.5–3.7°C |
| December | 0% | 28% | 4% | 35% | -8.7–-1.2°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 6070860
- NOAA station
- CA001173210 · GOLDEN A
- Station distance
- 23.8 km from the place centre
- Climate period
- 1991–2020
- Minimum month coverage
- 28 usable years
- Daylight
- Calculated from latitude 51.13°, 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.