La Unión weather
Best months for weather: May–Dec. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for La Unión, Piura, Peru.
Best Time to Visit
Peak season May–DecOff season Feb–Mar
La Unión weather by month
When is the best time to visit La Unión?
Based on weather alone, the best time to visit La Unión is May–Dec, according to NASA's 2001–2025 climate averages. Feb–Mar tends to be the least pleasant. Average highs run from 30°C (85°F) in August to 34°C (93°F) in March.
What is the rainiest month in La Unión?
March is the wettest month, with about 48 mm (1.9 in) of rain on average. September is the driest, with about 1 mm (0.0 in).
What is the hottest month in La Unión?
March is the warmest, with average highs of 34°C (93°F) and lows of 23°C (73°F). August is the coolest, with highs of 30°C (85°F) and lows of 16°C (60°F).
Does La Unión have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is March at about 48 mm (1.9 in).
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), forecast and current conditions from Open-Meteo. Page updated . How we rate months