September
September · October · May
United States · 1991–2020
September leads for comfortable weather in Wellington: typically 28.7°C by day, 15.3°C at night, with 71 mm of rain. Based on measured 1991–2020 NOAA station history.
September · October · May
September · July · August
April · October · November
The weakest month is January, scoring 6 against September’s 77 — days reach only 6.9°C, 17° below the 24°C the score treats as ideal, and nights drop to -5.7°C.
Month by month
The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.
| Month | Day | Night | Rain | Wet days | Daylight | Comfort | Coverage |
|---|---|---|---|---|---|---|---|
| January | 6.9°C | -5.7°C | 23 mm | 3 | 9 h 51 | 6 | Strong coverage |
| February | 9.5°C | -3.9°C | 34 mm | 4 | 10 h 45 | 17 | Strong coverage |
| March | 15.2°C | 1.3°C | 65 mm | 5.4 | 11 h 51 | 40 | Strong coverage |
| April | 20.5°C | 6.3°C | 76 mm | 6.2 | 13 h 06 | 64 | Strong coverage |
| May | 25.4°C | 12.8°C | 135 mm | 8.6 | 14 h 09 | 72 | Strong coverage |
| June | 30.9°C | 18.3°C | 129 mm | 7.6 | 14 h 43 | 54 | Strong coverage |
| July | 33.8°C | 20.9°C | 99 mm | 6.6 | 14 h 29 | 45 | Strong coverage |
| August | 33.1°C | 20°C | 106 mm | 6.5 | 13 h 35 | 48 | Strong coverage |
| September | 28.7°C | 15.3°C | 71 mm | 5.4 | 12 h 22 | 77 | Strong coverage |
| October | 22.2°C | 8.1°C | 81 mm | 5.5 | 11 h 10 | 73 | Strong coverage |
| November | 14.6°C | 1.4°C | 39 mm | 3.5 | 10 h 07 | 43 | Strong coverage |
| December | 8°C | -3.9°C | 34 mm | 3.9 | 9 h 36 | 12 | Strong coverage |
What has changed
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.
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 26.1°C22 Jan 1967 | -28.3°C8 Jan 1913 | 76 mm5 Jan 2005 | 136 mm1949 · driest 0 mm in 1914 | 113 |
| February | 31.1°C23 Feb 1996 | -28.9°C12 Feb 1899 | 54 mm4 Feb 1955 | 104 mm1911 · driest 0 mm in 2006 | 114 |
| March | 34.4°C21 Mar 1916 | -20.0°C4 Mar 2014 | 57 mm28 Mar 2009 | 219 mm1973 · driest 0 mm in 1936 | 115 |
| April | 37.2°C13 Apr 1972 | -11.1°C3 Apr 1936 | 111 mm8 Apr 1927 | 250 mm1944 · driest 4 mm in 2014 | 116 |
| May | 39.4°C29 May 1913 | -4.4°C1 May 1909 | 209 mm8 May 2019 | 554 mm2019 · driest 5 mm in 1970 | 115 |
| June | 44.4°C5 Jun 1933 | 4.4°C13 Jun 1911 | 166 mm21 Jun 1942 | 386 mm1957 · driest 8 mm in 2016 | 112 |
| July | 48.9°C18 Jul 1936 | 7.8°C25 Jul 1911 | 122 mm4 Jul 1958 | 288 mm1950 · driest 0 mm in 1916 | 112 |
| August | 48.3°C12 Aug 1936 | 5.0°C22 Aug 2015 | 127 mm17 Aug 1968 | 270 mm1927 · driest 0 mm in 2000 | 110 |
| September | 44.4°C2 Sep 1939 | -2.2°C30 Sep 1984 | 116 mm22 Sep 1925 | 337 mm1973 · driest 0 mm in 1939 | 110 |
| October | 38.3°C6 Oct 1939 | -11.1°C30 Oct 1917 | 160 mm2 Oct 1926 | 279 mm1926 · driest 0 mm in 1995 | 109 |
| November | 30.6°C3 Nov 2012 | -16.1°C27 Nov 1975 | 112 mm16 Nov 1964 | 273 mm1964 · driest 0 mm in 1945 | 111 |
| December | 29.4°C24 Dec 1955 | -26.1°C22 Dec 1989 | 75 mm4 Dec 1944 | 106 mm1944 · driest 0 mm in 1948 | 111 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) | Snow days |
|---|---|---|---|---|---|
| January | 0 | 0 | 27 | <1 | 2 |
| February | <1 | 0 | 22 | 1 | 2 |
| March | 3 | <1 | 13 | 2 | <1 |
| April | 8 | 1 | 4 | 2 | 0 |
| May | 18 | 6 | 0 | 4 | 0 |
| June | 28 | 19 | 0 | 4 | 0 |
| July | 30 | 26 | 0 | 3 | 0 |
| August | 30 | 24 | 0 | 3 | 0 |
| September | 24 | 14 | 0 | 2 | 0 |
| October | 12 | 3 | 2 | 2 | <1 |
| November | 1 | <1 | 13 | 1 | <1 |
| December | 0 | 0 | 25 | 1 | 2 |
The best month has moved. On the 1961–1990 numbers the strongest month here was May (scoring 79); on 2011–2025 it is October (82). Both are scored the same way, from the same station — only the climate underneath changed.
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 2% | 11% | 2% | 6% | 2.3–10.2°C |
| February | 10% | 13% | 4% | 10% | 4.5–14.2°C |
| March | 27% | 17% | 6% | 14% | 11.4–19.0°C |
| April | 51% | 21% | 8% | 20% | 18.2–24.0°C |
| May | 66% | 26% | 12% | 29% | 22.9–28.0°C |
| June | 74% | 26% | 13% | 27% | 28.8–33.9°C |
| July | 80% | 20% | 9% | 18% | 31.9–37.2°C |
| August | 80% | 19% | 9% | 18% | 30.7–36.9°C |
| September | 78% | 19% | 8% | 16% | 26.3–31.8°C |
| October | 61% | 17% | 7% | 15% | 19.7–25.3°C |
| November | 22% | 13% | 5% | 9% | 11.1–17.5°C |
| December | 3% | 11% | 4% | 7% | 4.9–11.5°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