Brazil
Best Time to Visit Picos
Picos, in Piauí state, is hot and semi-arid year-round. The key variables are rain and river flow, not temperature.
✦ Go between June and August for the best balance of dry weather and comfortable temperatures.
✅ Best months
June to August: the coolest, driest months with lower humidity and clearer skies, plus the town is quieter after school holidays.
🔥 Peak season
July: school holidays across Brazil drive domestic tourism. Hotels can be 20–30% pricier and fill up weeks ahead. The Festival Junino (June/July) is the main draw.
💷 Shoulder (best value)
September and October: still dry but cooling down, with hotel rates 15–20% below peak. Fewer visitors, good for exploring the Serra da Capivara.
🌙 Quietest & cheapest
January to March: the wet season. Humidity sticks around 70–80%, roads can be muddy, and mosquitoes more active. Cheapest rates, but expect heavy, short downpours.
Picos season by season
Spring (Mar–May)
Weather: 26–33°C, rising humidity. March is wettest month (150mm). Showers taper off by May.
Crowds: low
Cheap, but expect rain on half the days.
Summer (Jun–Aug)
Weather: 24–32°C, lowest humidity (50–60%). Clear skies, cool evenings.
Crowds: medium (July peak)
Best weather for hiking the national park. Book accommodation in advance for July.
Autumn (Sep–Nov)
Weather: 25–34°C, humidity slowly rising. Very little rain until November.
Crowds: low to medium
Great hiking conditions, museums less crowded.
Winter (Dec–Feb)
Weather: 26–35°C, high humidity (70–80%). December and February see 100–120mm rain each.
Crowds: low
Wettest season. Can still visit, but trails may be slippery.
🎭 Events worth timing a trip around
Festival Junino (June/July): regional forró music, bonfires, and street food; fills hotels. Three-day weekend in late June around São João.
🧳 What to pack
A light, long-sleeved shirt for sun protection and a rain jacket for sudden downpours from October to March.
Found your dates? Get your hotel briefing.
Room tips, the 14-day forecast for your exact stay, dining, transport and more — free for any Picos hotel.
Researched & reviewed by the TripSage editorial team · Updated July 2026.