Costa Rica (Guanacaste) Climate: Sunshine Hours, Temperature & Best Time to Visit

Costa Rica (Guanacaste) climate month by month: sunshine hours, temperature, rain and day length from weather station data 1991–2020. Best time to visit: January, February, March, December. Sunniest month: March.

  • 2,489 hours of sunshine a year – 1.5 times as much as London. Warmest is April at 38 °C by day.
  • Best time to visit: January, February, March, December

Sunshine and temperature in Costa Rica (Guanacaste) month by month

  • January: 8.3 h Sun/day (256 h), Daytime high 35 °C, Night 16 °C, Rain 2 mm, Holiday score 68
  • February: 9.0 h Sun/day (255 h), Daytime high 36 °C, Night 17 °C, Rain 2 mm, Holiday score 67
  • March: 9.3 h Sun/day (289 h), Daytime high 37 °C, Night 18 °C, Rain 3 mm, Holiday score 64
  • April: 8.3 h Sun/day (250 h), Daytime high 38 °C, Night 19 °C, Rain 31 mm, Holiday score 55
  • May: 6.0 h Sun/day (186 h), Daytime high 37 °C, Night 21 °C, Rain 221 mm, Holiday score 37
  • June: 5.8 h Sun/day (174 h), Daytime high 35 °C, Night 22 °C, Rain 232 mm, Holiday score 45
  • July: 5.8 h Sun/day (179 h), Daytime high 35 °C, Night 21 °C, Rain 146 mm, Holiday score 46
  • August: 5.7 h Sun/day (176 h), Daytime high 35 °C, Night 21 °C, Rain 234 mm, Holiday score 44
  • September: 5.5 h Sun/day (166 h), Daytime high 34 °C, Night 21 °C, Rain 371 mm, Holiday score 46
  • October: 4.9 h Sun/day (153 h), Daytime high 34 °C, Night 21 °C, Rain 371 mm, Holiday score 46
  • November: 6.0 h Sun/day (179 h), Daytime high 33 °C, Night 19 °C, Rain 119 mm, Holiday score 54
  • December: 7.3 h Sun/day (226 h), Daytime high 34 °C, Night 17 °C, Rain 12 mm, Holiday score 66
  • Temperature: station Daniel Oduber Int. Airport (10 km) · Sunshine: estimated from NASA satellite data (±15 %) · Rain: station Daniel Oduber Int. Airport (10 km). Averages 1991–2020, source: Deutscher Wetterdienst (CLIMAT station data, CC BY 4.0) and NASA POWER; single years differ.

Questions

  • When is the best time to visit Costa Rica (Guanacaste)? By sunshine, warmth and rain the best months are January, February, March, December. Sunniest is March with 289 hours of sunshine, warmest April at 38 °C.
  • How many hours of sunshine does Costa Rica (Guanacaste) get a year? About 2,489 hours – 1.5 times as many as London (1,675 hours).
  • When does it rain most in Costa Rica (Guanacaste)? In September, with 371 mm on average. The driest month is January.
  • How warm is Costa Rica (Guanacaste) in January and July? In January the average daytime high is 35 °C, in July 35 °C.