Costa Rica San José Weather in June — Climate Guide
June in San José is moderate
San José Weather in June — Quick Answer
As of 2026- Avg temp
- 26° / 17°
- Rainfall
- 245mm · 19 days
- Crowds
- Moderate
As of 2026, San José in June averages a high of 26°C and low of 17°C with 245mm of rain over about 19 days. Green season — around 26°C/17°C, clear mornings and wet afternoons. Rain jacket and quick-dry layers essential. Humid. Warm layer for Monteverde and volcano summits.
June is moderate for San José.
June is solidly in the green season — green, quiet, and good value, with the familiar rhythm of bright mornings and rainy afternoons. Daytime highs hold near 26°C with cool nights, while rainfall is high (about 245mm) and humidity climbs.
Prices remain well below the dry-season peak, and attractions are uncrowded. As in May, the strategy is to front-load activities into the morning — volcanoes, beaches, hikes — and treat afternoons as flexible, with indoor museums or hot springs as rain-friendly backups.
Travel score
San José June Weather Stats
Avg High
26°C
Avg Low
17°C
Rainy Days
19
245mm total
Sunshine
5.5h
Daily avg
Humidity
80%
muggy
UV Index
11
Extreme
Wind
9 km/h
Gusts 18
Crowds
Moderate
At attractions
June Sunrise & Sunset
Air Quality
PM2.5
14 μg/m³
PM10
26 μg/m³
Status
good
Feels-Like Temperature & Wind
Feels like
Daytime
28°C
Nighttime
18°C
Humidity and wind affect how the actual temperature feels.
Wind
9 km/h
Max gust 18 km/h
Activities Recommended for June
June Travel Pros & Cons
Pros
- Green-season value and low crowds
- Clear mornings for activities
- Lush, atmospheric landscapes
- Hot springs ideal in the rain
Cons
- High rainfall, wet afternoons
- High humidity
- More mosquitoes in the lowlands
- Some rural roads muddier
June Events & Festivals
- Green season continues — value prices
- Father's Day (third Sunday of June)
- School-holiday mini-peak (Northern Hemisphere) in some tourist areas
San José in June — Full Picture
June is solidly in the green season — green, quiet, and good value, with the familiar rhythm of bright mornings and rainy afternoons. Daytime highs hold near 26°C with cool nights, while rainfall is high (about 245mm) and humidity climbs.
Prices remain well below the dry-season peak, and attractions are uncrowded. As in May, the strategy is to front-load activities into the morning — volcanoes, beaches, hikes — and treat afternoons as flexible, with indoor museums or hot springs as rain-friendly backups.
Morning volcano-view odds are decent before the cloud builds. The Arenal hot springs are a great rainy-day activity, and the rainforest and cloud forest are at their most atmospheric.
Pack a dependable rain jacket, quick-dry clothing, waterproof shoes, and insect repellent (the wetter months bring more mosquitoes in lowland and coastal areas). A warm layer is still needed for the cool highlands.
What to Wear & What to Pack
Green season — around 26°C/17°C, clear mornings and wet afternoons. Rain jacket and quick-dry layers essential. Humid. Warm layer for Monteverde and volcano summits.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
26°C
16.7°C
8/mo
Summer (Jun·Jul·Aug)
Current26°C
17°C
17.7/mo
Autumn (Sep·Oct·Nov)
25.3°C
16°C
18/mo
Winter (Dec·Jan·Feb)
24.3°C
15°C
2.3/mo
San José Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| January (Best) | 24° | 15° | 2d·15mm | 8h | 70% | 11 | Very busy | Peak |
| February (Best) | 25° | 15° | 1d·10mm | 8.5h | 68% | 11 | Busy | Peak |
| March (Best) | 26° | 16° | 2d·20mm | 8.5h | 65% | 12 | Busy | Peak |
| April (Best) | 26° | 17° | 5d·50mm | 7.5h | 68% | 12 | Busy | Peak |
| 26° | 17° | 17d·230mm | 6h | 78% | 11 | Moderate | Shoulder | |
| 26° | 17° | 19d·245mm | 5.5h | 80% | 11 | Moderate | Shoulder | |
| 26° | 17° | 16d·180mm | 6h | 78% | 11 | Busy | Shoulder | |
| 26° | 17° | 18d·210mm | 5.5h | 80% | 11 | Moderate | Shoulder | |
| 26° | 16° | 20d·280mm | 5h | 82% | 10 | Quiet | Low season | |
| 25° | 16° | 21d·295mm | 5h | 82% | 10 | Quiet | Low season | |
| 25° | 16° | 13d·130mm | 6h | 78% | 10 | Moderate | Shoulder | |
| December (Best) | 24° | 15° | 4d·40mm | 7.5h | 72% | 11 | Very busy | Peak |
View Other Months
San José June Hotel Picks
Frequently Asked Questions
Is June a good time to visit San José?
San José in June is moderate. Tourist crowds are moderate and flight/hotel prices are shoulder.
What's the average temperature in San José in June?
San José June averages a high of 26°C and a low of 17°C.
Does it rain much in San José in June?
San José June averages 245mm of rainfall over about 19 rainy days.
What should I wear in San José in June?
Green season — around 26°C/17°C, clear mornings and wet afternoons. Rain jacket and quick-dry layers essential. Humid. Warm layer for Monteverde and volcano summits.
What time are sunrise and sunset in San José in June?
San José June sunrise is 05:20 and sunset is 18:00, with 12h 40min of daylight.
What's the air quality like in San José in June?
San José June air quality (AQI) averages 38, rated Good. PM2.5 averages 14μg/m³.
What activities are recommended in San José in June?
In June, San José is great for Morning volcano trips, Arenal hot springs, Cloud-forest hikes.
Is June peak season in San José?
San José June crowds are moderate and prices are shoulder. You can travel relatively comfortably without long queues.
Best Months to Visit San José
View Other Months
Planning a June trip to San José?
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Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.