Costa Rica · Month comparison
October vs July
July ranks #1 overall vs October at #3. Humpback whales arrive off the Pacific coast and sea turtles begin nesting at Tortuguero.
October
#3 of 12 months
Best match
Still the wet season on the Pacific, but whale watching peaks and the Caribbean coast is at its driest.
- ↑Humpback whale watching peaks in October on the Pacific south coast — the Antarctic humpback migration is at maximum density, with excellent sighting rates from Marino Ballena and Drake Bay
- ↑Caribbean coast mini-dry season continues: Puerto Viejo and Cahuita enjoy their calmest, sunniest period while the Pacific remains wet — a genuinely counter-intuitive good-weather window
July
#1 of 12 months
Best match
Humpback whales arrive off the Pacific coast and sea turtles begin nesting at Tortuguero.
- ↑Humpback whale watching season opens off the Pacific south coast (Marino Ballena National Park, Drake Bay) — the July–October migration of humpbacks from Antarctica is one of the world's great wildlife spectacles, viewable on day boats
- ↑Green turtle nesting begins at Tortuguero National Park on the Caribbean coast — guided night beach walks to watch turtles lay eggs are among the most extraordinary wildlife experiences in Central America
| Factor | October | July |
|---|---|---|
| Weather score | 3 | 5 |
| Value score | 9 | 8 |
| Crowd score | 9 | 8 |
| Events score | 8 | 9 |
| Atmosphere | 7 | 8 |
| Avg high temp | 25°C | 25°C |
| Monthly rain | 300mm | 211mm |
| Daily sunshine | 4.8hrs | 5.3hrs |
October trade-offs
- ↓300mm of rain on the Pacific — October is the second-wettest month and conditions remain very wet; activities on the Pacific side require serious weather flexibility
- ↓Arenal Volcano is almost always shrouded in cloud in October; visiting La Fortuna for the hot springs, hanging bridges, and La Fortuna Waterfall makes sense, but volcano views require exceptional luck
- ↓Some transport links and small ferries (Montezuma, Nicoya Peninsula) can be disrupted in heavy rains; the Osa Peninsula requires a well-researched itinerary
July trade-offs
- ↓Pacific rainfall continues at 211mm: the morning-clear, afternoon-wet pattern holds, and planning activities for early morning is essential
- ↓Tortuguero turtle tours require advance booking through licensed operators — only a limited number of visitors allowed on the beach each night; reserve weeks ahead
- ↓Still low season pricing which means infrastructure is quieter; some upscale lodges and tour operators work at reduced capacity
Scores compare months within Costa Rica. Climate data: Open Meteo ERA5 30-year normals (1991–2020). Methodology →