Climate almanac
San Sebastián
Retalhuleu, Guatemala · 14.56°, -91.65°
What is the climate like in San Sebastián?
The best time to visit San Sebastián is typically December – March, with trip comfort peaking in February (8.2/10). San Sebastián is warmest in April, when daily highs average 93°F (34°C), and coolest in January, when lows fall to about 71°F (22°C). The wettest month is typically June and the driest is February; the year sees roughly 102 in (2595 mm) of precipitation.
- Best time to visitDecember – March — comfort peaks in February (8.2/10)
- Warmest monthApril — average high 93°F (34°C)
- Coolest monthJanuary — average low 71°F (22°C)
- Wettest monthJune (19 in (492 mm))
- Driest monthFebruary (0.7 in (18 mm))
- Annual precipitation102 in (2595 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromTapachula Chis, 76 km away (1976-2026)