Harlingen weather
Best months for weather: Oct–May. Below: today's sky, the hour-by-hour rain chance and the 16-day forecast for Harlingen, Texas, United States.
Best Time to Visit
Peak season Oct–MayOff season Sep
Harlingen weather by month
When is the best time to visit Harlingen?
Based on weather alone, the best time to visit Harlingen is Oct–May, according to NASA's 2001–2025 climate averages. Sep tends to be the least pleasant. Average highs run from 22°C (71°F) in January to 34°C (93°F) in August.
What is the rainiest month in Harlingen?
September is the wettest month, with about 144 mm (5.7 in) of rain on average. February is the driest, with about 22 mm (0.9 in).
What is the hottest month in Harlingen?
August is the warmest, with average highs of 34°C (93°F) and lows of 26°C (78°F). January is the coolest, with highs of 22°C (71°F) and lows of 12°C (54°F).
Does Harlingen have a rainy season?
Not a strong one. No month averages more than 150 mm of rain; the wettest is September at about 144 mm (5.7 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