Harlingen (TX) Temperatures: Monthly Averages and Year-Round Insights
On this page, we’ll explore Harlingen’s temperature statistics in detail, including day and night variations and monthly averages. We’ll also compare the annual temperature to other cities in the United States of America.
Monthly Temperature Averages
Depending on the time of the year, temperatures range from very hot to pleasant in Harlingen. Typically, maximum daytime temperatures range from a very hot 36°C in August to a pleasant 21°C in the coolest month, January. Nights are cooler, with temperatures generally dropping to 9°C, particularly during the colder months.
The chart below illustrates the average maximum day and minimum night temperatures in Harlingen by month:
The minimum temperature is commonly observed between 4 AM and 6 AM, with the maximum occurring around 3 PM, when the sun’s strength is at its peak. August, the city’s warmest month, sees 307 hours of sunshine.
The chart below shows the average temperature throughout the year:
January, the city’s coldest month, receives about 38 mm of rainfall spread over roughly 8 days. For more information, please visit our Harlingen Precipitation page.
Annual Temperatures in the United States of America Compared
The map below shows the annual temperature across the United States of America. You can also select the different months in case you are interested in a specific month.
very warm
warm
pleasant
moderate
cold
very cold
Harlingen Temperatures Compared World Wide
Harlingen’s average annual maximum temperature is 29°C. Let’s compare this with some popular tourist destinations:
Athens, Greece, experiences an average annual temperature of 23°C, with hot summers and mild winters typical of a Mediterranean climate.
Meanwhile, Queenstown, New Zealand, the average annual temperature is significantly lower at 10°C, with mild summers and cold winters.
Meanwhile, New York City, USA, experiences a more pronounced seasonal variation with an average annual temperature of 17°C.
Adelaide, Australia, enjoys warm summers and mild winters, with an average annual temperature of 21°C.
How does the temperature feel?
Humidity is an essential factor in how you experience temperature. When a warm period is accompanied by high humidity, it results in a higher perceived temperature. This is especially true when temperatures exceed 25°C, as it can cause greater discomfort.
In Harlingen, during the coolest month, January, you will experience 78% humidity, which is considered high. This is accompanied by an average maximum temperature of 21°C. In the warmest month, August, the humidity is 73% combined with an average maximum temperature of 36°C, which creates a high-feel temperature. Explore our detailed page on humidity levels for further details.
How are these Temperatures Measured?
Generally, temperature data depicting climate is usually given over a 30-year average in order to reduce short-term fluctuations and reveal better long-term trends in climate conditions.
This temperature data is taken from land-based thermometers, ocean buoys, ships, and satellites. These measurements are transmitted to weather stations and climate centers around the globe where they are processed, averaged, and analyzed in order to monitor the trends and create climate models.
Global Warming and Its Effects
Climate change is affecting worldwide temperatures, including in Harlingen. It has massive impacts on both local and global levels:
- Global Temperature Rise: The average global land and sea temperatures have risen by about 1.2°C since pre-industrial times.
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Local Impacts: Most regions of the world are witnessing warmer winters with fewer frost and snowfall days. The global frequency and severity of heatwaves have increased. For example, Europe's summers of 2018, 2019, and 2020 all broke records. Summers are also becoming drier; however, during winter, inland regions have experienced increased rainfall. This has caused elevated river levels and more cases of flooding.
Many countries are experiencing earlier springs and later autumns. This is why some bird species have shifted their migration dates.
For more detailed information about Harlingen’s weather, including monthly rainfall, sunshine hours, and humidity levels, visit our Harlingen climate page.
Current temperature in Harlingen (TX)
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