For typically drier plans
Published averages point to November–April as the drier part of the year. Keep layers for mornings and evenings; no season guarantees clear skies.
Check the forecast for your destination and compare typical conditions across all twelve months. The weather on a specific date can differ greatly from an average.
Current model estimate and forecast; not a weather-station observation.
Data from MET Norway · CC BY 4.0 · Units converted and forecast intervals selected by Tours San Cristóbal.
Published averages point to November–April as the drier part of the year. Keep layers for mornings and evenings; no season guarantees clear skies.
From May to October, pack rain protection and leave flexibility in your plans. Use a recent forecast for daily decisions and check access and activities with your operator.
Published 1991–2020 average daily highs and lows and monthly precipitation. Rounded figures; these are neither temperature extremes nor daily rain probabilities.
| Month | Average high | Average low | Monthly rainfall |
|---|---|---|---|
| January | 21°C / 70°F | 5°C / 41°F | 4 mm / 0.2 in |
| February | 22°C / 72°F | 5°C / 41°F | 9 mm / 0.4 in |
| March | 23°C / 73°F | 7°C / 45°F | 18 mm / 0.7 in |
| April | 24°C / 75°F | 9°C / 48°F | 36 mm / 1.4 in |
| May | 23°C / 73°F | 11°C / 52°F | 138 mm / 5.4 in |
| June | 22°C / 72°F | 12°C / 54°F | 238 mm / 9.4 in |
| July | 22°C / 72°F | 11°C / 52°F | 142 mm / 5.6 in |
| August | 23°C / 73°F | 11°C / 52°F | 178 mm / 7.0 in |
| September | 22°C / 72°F | 12°C / 54°F | 229 mm / 9.0 in |
| October | 22°C / 72°F | 10°C / 50°F | 107 mm / 4.2 in |
| November | 21°C / 70°F | 8°C / 46°F | 33 mm / 1.3 in |
| December | 21°C / 70°F | 6°C / 43°F | 9 mm / 0.4 in |
Source: Climate-Zone table, citing CONAGUA/SMN normals at La Cabaña. Checked October 17, 2026. Fahrenheit and inches converted from the published °C and mm values. View source ↗
Cool mornings and evenings; pack a warm layer for early pickups.
A useful month for walking plans; keep a jacket for the change after sunset.
Plan sun protection for daytime outings and layers for the highlands.
Among the warmer typical daytime months here; carry water and an extra layer.
Rain becomes a bigger planning factor; carry a compact rain layer.
Keep outdoor plans flexible and protect cameras and documents from rain.
Wet-season planning still applies; a lower monthly average is not a dry-day guarantee.
Choose footwear with grip and have a museum or indoor alternative ready.
Allow extra flexibility for long road trips and check destination forecasts.
Conditions transition toward a drier part of the year, but rain remains possible.
Plan for cooler nights and bring layers for evening events.
Prepare for cool evenings and early starts; pack for the city and each tour destination.
Forecasts use representative city points. The Tuxtla point provides context for the Sumidero area, not conditions at every part of the canyon.
Highland base: pack layers and check the evening temperature.
Check the lower-elevation destination separately. Bring sun protection for the river and confirm boating arrangements with the operator.
Plan for jungle conditions and outdoor walking. Pack water, weather protection and a manageable day bag.
A forecast does not confirm that a tour will operate. Check weather-related changes directly with the operator; rain does not automatically mean cancellation, and clear skies do not guarantee access.