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St Martin in July: Weather, Average temperature and Climate

Planning a trip and want to know what the weather in St Martin in July will be like? Take a look at our weather guide for St Martin, based on historical data.
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July

Weather in St Martin in July 2025

OK Weather
Warm
🌧️
Rainy
If you plan to visit St Martin in July, the weather is typically alright, with an average high temperature of +81°F during the day and approximately 2 sunny days. Expect some rainy, though, as there are typically 25 rainy days in the month and around 63 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+81°F
Avg. max. temperature
+68°F
Min.
+88°F
Max.
63 mm
Total precipitation
82%
Avg. humidity
6 m/s
Avg. wind
2 ☀️
Sunny Days
4 ⛅️
Cloudy
25 🌦
Rainy
Our opinion: St Martin has OK weather in July.

Average temperature in St Martin in July

Here are the expected maximum, average and minimum temperatures in St Martin for July based on the historical data.
Last Year
Historical Data

Going from a maximum of +81°F during the day to a minimum of +75°F during the night, the temperature in July averages around +81°F.

The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +81°F to +81°F.

Is St Martin warm or cold in July?

St Martin is typically warm in July.

Maximum temperatures go up compared to the previous month from +79°F to +81°F. The minimum temperature also goes up from +75°F to +75°F.

It’s generally warm, but pack a long-sleeve shirt for evenings.

Take a look at how July is compared to other months in St Martin:

Climate in St Martin in July

St Martin weather looks like this, on average, in July and the surrounding months.
JuneJulyAugust
Avg. temperature
+79°F+81°F+81°F
Min. temperature
+70°F+68°F+68°F
Max. temperature
+88°F+88°F+88°F
Rainfall
46 mm63 mm75 mm
Wind
5 m/s6 m/s5 m/s
Humidity
82%82%82%
Air pressure
1016 HPa1016 HPa1014 HPa
Sunny days
122
Cloudy days
744
Rainy days
212524
Snowy days
000

July typically has worse weather conditions compared to June. It’s getting warmer as July arrives. The average maximum temperature goes up from +79°F to +81°F during the day. Prepare for more rain. Average rainfall goes from 46 mm to 63 mm. Humidity levels don’t change as the month goes on, averaging around 82%. Winds are stronger in comparison to June, going up from 5 m/s to 6 m/s on average. The good news is there are likely to be more sunny days in July, from 1 to 2.

August brings much the same weather, it remains ok.

Wind

Wind speed in St Martin in July based on historical data.
Last Year
Historical Data

The average wind speed is 6 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in St Martin is gradually decreasing during July, going from 5 m/s to 4 m/s over the course of the month.

Rain

Amount of rainfall in mm during July in St Martin based on historical data.
Last Year
Historical Data
Typically, there is a 55% chance of rain on an average day in July, with total rainfall of approximately 68 mm. The maximum amount of rainfall per day is around 15 mm, which is considered light rain. July is a pretty wet month with over 17 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how July is compared with other months in the amount of precipitation, total mm:
St Martin wettest month is October, where a typical day has a 77% chance of precipitation and 115 mm of rainfall per day. March, on the other hand, is the driest month with a mere 58% chance of precipitation and 20 mm of rainfall per day.

How was the weather last July in St Martin?

This is the weather in St Martin in July 2023:
1 July
☀️
+80°F
2 July
☀️
+80°F
3 July
🌧️
+80°F
4 July
🌧️
+80°F
5 July
☀️
+79°F
6 July
☀️
+80°F
7 July
☀️
+79°F
8 July
🌧️
+79°F
9 July
🌧️
+80°F
10 July
☁️
+81°F
11 July
☀️
+80°F
12 July
🌧️
+80°F
13 July
☀️
+80°F
14 July
☀️
+80°F
15 July
☁️
+80°F
16 July
🌧️
+80°F
17 July
🌧️
+80°F
18 July
🌧️
+81°F
19 July
☀️
+80°F
20 July
☀️
+80°F
21 July
☀️
+80°F
22 July
☀️
+80°F
23 July
☀️
+80°F
24 July
☀️
+81°F
25 July
🌧️
+80°F
26 July
☀️
+80°F
27 July
☀️
+80°F
28 July
☀️
+80°F
29 July
☀️
+81°F
30 July
☁️
+80°F
31 July
☀️
+80°F
In July 2023 St Martin had 19 sunny days, 3 cloudy days, and 9 rainy days. The average maximum temperature was +81°F, with an absolute maximum of +81°F and a minimum of +79°F. The average humidity was 82%, with a maximum of 100% and a minimum of 76%. The average wind speed was 6 m/s, with a maximum of 10 m/s and a minimum of 2 m/s.
Are you planning a trip in July?

Climate Change Over the Years

This is how St Martin climate has changed over the last 43 years.

The climate in St Martin in July has not changed that much over the last 43 years.

The average temperature was the lowest in 1985 (+75°F) and the highest in 2020 (+83°F). The driest year was 1994 with only 343 mm of rainfall, and the wettest year was 1999 with 1121 mm.

FAQ

Frequently asked questions about the weather in St Martin in July:

Is July a good time to visit St Martin?

It’s always a good time to visit St Martin, but the weather is changeable in July, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in St Martin in July?

July is warm in St Martin. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.

Is St Martin rainy in July?

St Martin is often rainy in July. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in St Martin in July?

Usually, it’s not very sunny in St Martin in July, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Monthly weather in St Martin

Source of the data

For this page, we’ve looked at the typical weather in St Martin, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.