The best time to visit Guatemala is Dec–Feb. Month by month, the verdicts rate Nov–Mar as comfortable on both daytime heat and rainfall — 5 months in all.
Summer wet season
| Month | High °C | High °F | Rainy days | Verdict |
|---|---|---|---|---|
| January | 26.5 | 80 | 8% | Go |
| February | 28.8 | 84 | 5% | Go |
| March | 30.6 | 87 | 8% | Go |
| April | 31.1 | 88 | 28% | Fair |
| May | 28.5 | 83 | 65% | Too wet |
| June | 26.0 | 79 | 86% | Too wet |
| July | 25.9 | 79 | 74% | Too wet |
| August | 25.7 | 78 | 82% | Too wet |
| September | 24.9 | 77 | 88% | Too wet |
| October | 25.0 | 77 | 70% | Too wet |
| November | 24.9 | 77 | 31% | Go |
| December | 25.2 | 77 | 8% | Go |
Verdict combines mean daytime high with rainy-day frequency. “Rainy days” is the share of days in the month with at least 1 mm of rain.
February is the driest month, with rain on 5% of days and daytime highs near 28.8°C (84°F). September is the wettest, at 88%. The warmest month is April at 31.1°C (88°F); the coolest is September at 24.9°C (77°F). The record rules out too wet in May–Oct.