December
December · January · November
Mexico · 1991–2020
December leads for comfortable weather in Tlatzala: typically 27.8°C by day, 13.6°C at night, with 1 mm of rain. Based on measured 1991–2020 NOAA station history.
December · January · November
November · March · February
December · January · November
The weakest month is July, scoring 38 against December’s 85 — 228 mm of rain falls, and days average 30.4°C, 6° above the 24°C the score treats as ideal.
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 | 28.7°C | 14.1°C | 8 mm | 0.8 | 11 h 09 | 83 | Good coverage |
| February | 30.9°C | 16.2°C | 4 mm | 0.3 | 11 h 32 | 75 | Good coverage |
| March | 31.9°C | 17.7°C | 3 mm | 0.2 | 11 h 59 | 69 | Good coverage |
| April | 33.2°C | 18.4°C | 6 mm | 0.4 | 12 h 32 | 63 | Good coverage |
| May | 33.2°C | 19°C | 57 mm | 4.1 | 12 h 58 | 58 | Good coverage |
| June | 31°C | 17.7°C | 184 mm | 11.6 | 13 h 12 | 43 | Good coverage |
| July | 30.4°C | 17.5°C | 228 mm | 13.6 | 13 h 07 | 38 | Good coverage |
| August | 30.1°C | 17.1°C | 190 mm | 12.5 | 12 h 44 | 46 | Good coverage |
| September | 29.9°C | 17.1°C | 152 mm | 10.6 | 12 h 13 | 53 | Good coverage |
| October | 29.2°C | 16.6°C | 83 mm | 6.2 | 11 h 42 | 70 | Good coverage |
| November | 28.9°C | 15.8°C | 23 mm | 2 | 11 h 16 | 82 | Good coverage |
| December | 27.8°C | 13.6°C | 1 mm | 0.2 | 11 h 03 | 85 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 38.9°C29 Jan 1999 | 7.2°C8 Jan 1998 | 36 mm25 Jan 1980 | 48 mm2004 · driest 0 mm in 1995 | 25 |
| February | 41.7°C19 Feb 1998 | 6.7°C15 Feb 1998 | 32 mm28 Feb 1981 | 44 mm2010 · driest 0 mm in 1990 | 26 |
| March | 45.6°C30 Mar 1998 | 9.4°C3 Mar 1986 | 39 mm2 Mar 2001 | 44 mm2001 · driest 0 mm in 1980 | 25 |
| April | 46.1°C19 Apr 1998 | 13.9°C22 Apr 1992 | 41 mm24 Apr 2001 | 75 mm2001 · driest 0 mm in 1979 | 23 |
| May | 46.7°C25 May 1998 | 10.6°C14 May 1997 | 105 mm31 May 2001 | 186 mm2001 · driest 0 mm in 1995 | 25 |
| June | 45.0°C2 Jun 1998 | 10.0°C8 Jun 1983 | 80 mm29 Jun 2006 | 329 mm1985 · driest 0 mm in 1994 | 26 |
| July | 41.7°C5 Jul 1998 | 13.9°C5 Jul 1997 | 83 mm8 Jul 2010 | 446 mm1992 · driest 0 mm in 1994 | 24 |
| August | 39.4°C21 Aug 1998 | 10.6°C31 Aug 1978 | 98 mm8 Aug 1992 | 433 mm2001 · driest 76 mm in 1981 | 25 |
| September | 40.0°C4 Sep 1998 | 10.6°C2 Sep 1978 | 45 mm11 Sep 2002 | 220 mm1999 · driest 29 mm in 2005 | 23 |
| October | 38.9°C7 Oct 1997 | 10.0°C1 Oct 1980 | 58 mm3 Oct 1986 | 269 mm1991 · driest 0 mm in 2010 | 26 |
| November | 38.9°C6 Nov 1997 | 8.9°C3 Nov 1999 | 41 mm9 Nov 1989 | 79 mm2006 · driest 0 mm in 2004 | 27 |
| December | 38.9°C3 Dec 1997 | 6.7°C31 Dec 1995 | 16 mm2 Dec 1986 | 16 mm1986 · driest 0 mm in 2000 | 25 |
| Month | Days 25°C+ | Days 30°C+ | Heavy rain (10 mm+) |
|---|---|---|---|
| January | 26 | 11 | <1 |
| February | 28 | 16 | <1 |
| March | 31 | 22 | <1 |
| April | 28 | 25 | <1 |
| May | 31 | 27 | 2 |
| June | 29 | 17 | 8 |
| July | 30 | 17 | 8 |
| August | 31 | 14 | 8 |
| September | 29 | 12 | 6 |
| October | 28 | 10 | 3 |
| November | 25 | 10 | <1 |
| December | 23 | 9 | 0 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 97% | 2% | <1% | 2% | 24.3–34.3°C |
| February | 99% | 2% | <1% | <1% | 27.2–34.5°C |
| March | 99% | <1% | <1% | 0% | 28.2–34.8°C |
| April | 98% | 2% | 1% | 1% | 30.1–36.3°C |
| May | 87% | 13% | 5% | 16% | 29.6–35.2°C |
| June | 56% | 42% | 24% | 61% | 27.5–34.3°C |
| July | 55% | 45% | 24% | 62% | 25.9–33.3°C |
| August | 58% | 41% | 22% | 58% | 25.9–33.0°C |
| September | 64% | 36% | 19% | 49% | 25.9–35.0°C |
| October | 77% | 18% | 8% | 19% | 25.1–33.5°C |
| November | 92% | 5% | 2% | 2% | 24.1–34.5°C |
| December | 98% | 1% | <1% | <1% | 23.6–31.6°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