March
March · October · April
Mexico · 1991–2020
March leads for comfortable weather in El Rosario: typically 24.7°C by day, 6.5°C at night, with 6 mm of rain. Based on measured 1991–2020 NOAA station history.
March · October · April
May · April · March
January · December · November
The weakest month is July, scoring 63 against March’s 82 — 178 mm of rain falls.
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 | 20.2°C | 3.4°C | 24 mm | 2.1 | 10 h 57 | 67 | Good coverage |
| February | 22.1°C | 4.6°C | 15 mm | 1.4 | 11 h 24 | 75 | Good coverage |
| March | 24.7°C | 6.5°C | 6 mm | 0.7 | 11 h 58 | 82 | Good coverage |
| April | 26.8°C | 8.8°C | 6 mm | 1 | 12 h 37 | 80 | Good coverage |
| May | 28.6°C | 11°C | 25 mm | 3.8 | 13 h 09 | 77 | Good coverage |
| June | 26.5°C | 12.5°C | 124 mm | 11.3 | 13 h 26 | 67 | Good coverage |
| July | 23.8°C | 11.9°C | 178 mm | 15.2 | 13 h 20 | 63 | Good coverage |
| August | 23.8°C | 11.6°C | 143 mm | 14 | 12 h 52 | 68 | Good coverage |
| September | 23.3°C | 11.2°C | 108 mm | 11.2 | 12 h 15 | 73 | Good coverage |
| October | 23.2°C | 8.3°C | 47 mm | 4.5 | 11 h 37 | 82 | Good coverage |
| November | 22.3°C | 5.5°C | 11 mm | 1.2 | 11 h 05 | 77 | Good coverage |
| December | 20.7°C | 3.7°C | 7 mm | 1 | 10 h 49 | 69 | Good coverage |
| Month | Record high | Record low | Wettest day | Wettest / driest month | Years |
|---|---|---|---|---|---|
| January | 27.2°C25 Jan 2000 | -4.4°C6 Jan 1999 | 61 mm25 Jan 1992 | 257 mm1992 · driest 0 mm in 1996 | 26 |
| February | 31.1°C28 Feb 2009 | -5.0°C3 Feb 1998 | 60 mm2 Feb 2010 | 122 mm2010 · driest 0 mm in 1983 | 25 |
| March | 32.8°C20 Mar 1977 | -2.2°C3 Mar 1993 | 42 mm21 Mar 2004 | 56 mm2004 · driest 0 mm in 1998 | 26 |
| April | 33.9°C8 Apr 1999 | 1.1°C6 Apr 1992 | 16 mm20 Apr 2009 | 39 mm1997 · driest 0 mm in 1983 | 26 |
| May | 35.6°C6 May 1998 | 3.3°C2 May 2010 | 49 mm22 May 2004 | 144 mm2004 · driest 0 mm in 1998 | 27 |
| June | 33.9°C3 Jun 1980 | 7.8°C4 Jun 2010 | 61 mm25 Jun 2007 | 298 mm2007 · driest 50 mm in 1982 | 25 |
| July | 30.6°C1 Jul 1992 | 7.2°C25 Jul 2003 | 98 mm4 Jul 1999 | 388 mm1984 · driest 57 mm in 1987 | 28 |
| August | 30.0°C6 Aug 2009 | 5.6°C28 Aug 2000 | 62 mm14 Aug 2002 | 228 mm1983 · driest 26 mm in 1982 | 26 |
| September | 32.8°C29 Sep 1977 | 2.8°C9 Sep 2011 | 58 mm21 Sep 1993 | 267 mm1978 · driest 0 mm in 1987 | 23 |
| October | 30.0°C22 Oct 1979 | 0.0°C25 Oct 1999 | 69 mm9 Oct 1992 | 155 mm1992 · driest 0 mm in 1979 | 27 |
| November | 28.9°C18 Nov 1981 | -3.3°C29 Nov 2011 | 52 mm26 Nov 1982 | 67 mm1982 · driest 0 mm in 1979 | 26 |
| December | 26.7°C29 Dec 1984 | -5.6°C26 Dec 2006 | 44 mm2 Dec 1979 | 65 mm1979 · driest 0 mm in 1997 | 27 |
| Month | Days 25°C+ | Days 30°C+ | Frost nights | Heavy rain (10 mm+) |
|---|---|---|---|---|
| January | 2 | 0 | 4 | <1 |
| February | 7 | <1 | 2 | <1 |
| March | 17 | <1 | <1 | <1 |
| April | 24 | 6 | 0 | <1 |
| May | 29 | 12 | 0 | <1 |
| June | 22 | 6 | 0 | 4 |
| July | 12 | <1 | 0 | 6 |
| August | 11 | <1 | 0 | 5 |
| September | 8 | <1 | 0 | 3 |
| October | 11 | 0 | <1 | 1 |
| November | 5 | 0 | 1 | <1 |
| December | 2 | 0 | 4 | <1 |
| Month | Warm & dry days | Wet days | Washouts | Week with 3+ wet days | Daytime mean has ranged |
|---|---|---|---|---|---|
| January | 71% | 6% | 2% | 7% | 18.5–22.4°C |
| February | 84% | 5% | 1% | 2% | 19.4–24.6°C |
| March | 96% | 2% | <1% | <1% | 23.1–26.5°C |
| April | 96% | 3% | <1% | 2% | 24.1–28.8°C |
| May | 90% | 10% | 2% | 9% | 27.1–30.6°C |
| June | 63% | 36% | 14% | 54% | 24.9–29.8°C |
| July | 51% | 49% | 20% | 65% | 22.5–26.5°C |
| August | 57% | 43% | 16% | 58% | 22.4–25.5°C |
| September | 62% | 35% | 12% | 42% | 22.3–24.1°C |
| October | 79% | 15% | 5% | 15% | 21.4–24.6°C |
| November | 84% | 6% | 1% | 4% | 20.6–23.8°C |
| December | 72% | 4% | <1% | 2% | 18.2–22.4°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