Ixtapa-Zihuatanejo, Mexico Climate
The warmest month is May, with an average high of 31°C; the coldest is January, with an average low of 22°C. A normal year brings 1098 mm of precipitation.
Temperature through the year
The normal daily high and low. The line marks today.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
Normals for Sep 25
- Normal high
- 28°C
- Normal low
- 24°C
- Reanalysis high
- 29°Cin 2011
- Reanalysis low
- 22°Cin 1992
- Chance of a wet day
- 87%
- Daylight
- 12 h 04 min
Month by month
Averages for 1991-2020. Wet days have at least 1 mm of precipitation in the reanalysis. Each month links to its own page.
| Month | Avg high | Avg low | Warmest | Coldest | Precipitation | Wet days |
|---|---|---|---|---|---|---|
| January | 29°C | 22°C | 32°C (2012) | 16°C (1997) | 12 mm | 3.1 |
| February | 29°C | 22°C | 32°C (2016) | 17°C (2004) | 11 mm | 0.0 |
| March | 30°C | 22°C | 33°C (2004) | 17°C (2003) | 3 mm | 0.0 |
| April | 31°C | 23°C | 34°C (2015) | 19°C (1997) | 0 mm | 0.0 |
| May | 31°C | 24°C | 35°C (1998) | 19°C (2010) | 28 mm | 6.2 |
| June | 29°C | 24°C | 34°C (2011) | 21°C (2010) | 180 mm | 21.0 |
| July | 29°C | 24°C | 33°C (2019) | 22°C (1996) | 177 mm | 24.8 |
| August | 28°C | 24°C | 33°C (2001) | 22°C (1993) | 233 mm | 27.9 |
| September | 28°C | 24°C | 31°C (2019) | 22°C (1992) | 288 mm | 27.0 |
| October | 28°C | 24°C | 31°C (2001) | 20°C (2007) | 136 mm | 15.5 |
| November | 29°C | 23°C | 32°C (1994) | 18°C (2002) | 24 mm | 3.0 |
| December | 29°C | 22°C | 32°C (2001) | 19°C (1999) | 6 mm | 0.0 |
| Year | 29°C | 23°C | 1098 mm | 129 |
Precipitation
Rain and melted snow together. The chance of a wet day is the share of days with at least 1 mm of precipitation in the reanalysis.
1098 mm in a normal year, most in September.
Chance of a wet day
- Chance of a wet day
Humidity and comfort
NASA POWER reanalysis, 1991-2020, for the grid cell around Ixtapa-Zihuatanejo.
The muggiest month is July, when 100 percent of days are muggy or worse, with a mean dew point of 18°C or more.
| Month | Dew point | Humidity | Dry | Comfortable | Humid | Muggy | Oppressive | Miserable |
|---|---|---|---|---|---|---|---|---|
| January | 17°C | 67% | 3% | 15% | 49% | 33% | 0% | 0% |
| February | 17°C | 64% | 1% | 22% | 63% | 14% | 0% | 0% |
| March | 16°C | 61% | 5% | 27% | 58% | 11% | 0% | 0% |
| April | 16°C | 59% | 3% | 28% | 53% | 16% | 0% | 0% |
| May | 19°C | 64% | 1% | 9% | 27% | 51% | 12% | 0% |
| June | 21°C | 77% | 0% | 0% | 2% | 27% | 71% | 0% |
| July | 22°C | 78% | 0% | 0% | 0% | 16% | 84% | 0% |
| August | 22°C | 80% | 0% | 0% | 0% | 8% | 92% | 0% |
| September | 22°C | 83% | 0% | 0% | 0% | 6% | 94% | 0% |
| October | 22°C | 82% | 0% | 0% | 2% | 13% | 85% | 1% |
| November | 20°C | 75% | 0% | 1% | 9% | 56% | 33% | 0% |
| December | 19°C | 71% | 0% | 4% | 32% | 59% | 5% | 0% |
Comfort is judged by the day's mean dew point: dry below 13°C, comfortable to 16°C, humid to 18°C, muggy to 21°C, oppressive to 24°C, miserable above.
Clouds
Average share of the sky covered, from satellite (CERES and GEWEX SRB) by way of NASA POWER, 1991-2020.
The clearest month is March, with the sky 24 percent covered on average; the cloudiest is September, at 76 percent.
Wind
The mean wind speed over the whole day, from the MERRA-2 reanalysis by way of NASA POWER. Gusts run well above it.
The windiest month is June, averaging 11.2 km/h at 10 meters (33 feet) above the ground.
Daylight and sunshine
The longest day is Jun 20, with 13 h 12 min of daylight; the shortest is Dec 18, with 11 h 04 min.
- Day length
Solar energy
Average daily sunshine reaching the ground on a flat surface, in kilowatt-hours per square meter, clouds included.
Month pages
The weather in Ixtapa-Zihuatanejo in each month, day by day.
What this means
A normal is the average of the thirty years 1991 to 2020, the period the World Meteorological Organization and NOAA use for comparison. It is an average, not a forecast: most days depart from it, and some by a long way.
Where no station record is within reach, the extremes shown are the highest and lowest the reanalysis produced for the date in 1991-2020, not measured records.
Cloud, humidity, wind and sunshine come from a reanalysis: a weather model run over the past with every observation fed in, averaged over a grid cell about 50 km across. It is consistent everywhere on Earth; it smooths local detail such as a lake shore or a valley.
More for this place
Nearby
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.