In terms of precipitation, rainfall in Harlingen ranges from 28.0 - 132.0 inches per month. September is typically the wettest month, when rainfall can reach 132.0 mm. January is typically the driest time to visit Harlingen when rainfall is around 28.0 mm.
If weather is an important factor for your trip to Harlingen, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travelers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 16.0 C).
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