July Weather in Saint Martin, United States

Last updated: June 24, 2025

In July, the average temperature in Saint Martin, United States hovers around 28°C (82°F). Daytime highs can reach up to 37°C (98°F), while the evenings dip to a cool 21°C (70°F). Expect about 189 mm (7.5 in) of precipitation over 22 days, resulting in an average humidity of 79%.

July Temperature in Saint Martin

In July in Saint Martin, the average temperature is 28°C (82°F), with maximums reaching 37°C (98°F) and minimums dropping as low as 21°C (70°F). This warm climate makes it an ideal destination for travelers looking to enjoy sunny weather and outdoor activities.

July Weather in Saint Martin: Daily Temperature Highs, Lows, and Averages

The chart illustrates July temperature patterns in Saint Martin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Martin, July typically has an average temperature of 28°C (82°F), with highs reaching up to 37°C (98°F) and lows dropping to around 21°C (70°F).

Data source: Temperature data for Saint Martin generated using information from the Copernicus Climate Change Service.

July Precipitation in Saint Martin

In Saint Martin in July, the total precipitation amount is 189 mm (7.5 in) spread over 22 days.

July Precipitation Trends in Saint Martin

The chart displays monthly precipitation patterns in Saint Martin, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In Saint Martin, July typically receives around 189 mm (7.5 inches) of precipitation spread over approximately 22 days.

Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

July Humidity in Saint Martin

In Saint Martin in July humidity is 79%. With an average temperature of 28°C (82°F), this humidity feels like a warm blanket wrapping around you, making outdoor exploration more strenuous and requiring frequent breaks for hydration.

July Average Humidity in Saint Martin

This chart illustrates the average monthly humidity levels in Saint Martin, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in Saint Martin is approximately 79%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in Saint Martin

In Saint Martin in July, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Saint Martin.

Maximum UV Index Levels in Saint Martin for July

The chart shows the monthly maximum UV Index (UVI) for Saint Martin in July, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In July, the maximum UV index in Saint Martin typically reaches 12, which falls under the extreme exposure category.

Data source: Saint Martin July UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How July Weather in Saint Martin Compares to Other Months

Weather in Saint Martin varies notably across the year, with each month offering distinct climate conditions. This page compares July’s weather to other months in Saint Martin, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Saint Martin, showing how July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (53°F)	92 mm (3.6 inches)	82%	moderate
February Weather	15°C (59°F)	107 mm (4.2 inches)	80%	very high
March Weather	18°C (64°F)	88 mm (3.5 inches)	80%	very high
April Weather	20°C (68°F)	122 mm (4.8 inches)	78%	extreme
May Weather	24°C (76°F)	132 mm (5.2 inches)	73%	extreme
June Weather	27°C (81°F)	247 mm (9.7 inches)	71%	extreme
July Weather	28°C (82°F)	189 mm (7.5 inches)	79%	extreme
August Weather	27°C (82°F)	224 mm (8.8 inches)	78%	extreme
September Weather	26°C (79°F)	145 mm (5.7 inches)	80%	very high
October Weather	22°C (73°F)	132 mm (5.2 inches)	76%	very high
November Weather	15°C (60°F)	58 mm (2.3 inches)	83%	high
December Weather	13°C (56°F)	110 mm (4.3 inches)	87%	moderate