September could be a good time to visit Santiago, as the weather is generally fine. The average high temperature is around +90°F, and there are typically 0 sunny days in September. However, expect about 16 rainy days, and total monthly rainfall of approximately 80 mm. The weather is changeable so pack for every eventuality. Search flightsin one click on Avionero.
Good to know:
September is usually the hottest month of the year in Santiago;
Average weather
☀️
+90°F
Avg. max. temperature
+66°F
Min.
+97°F
Max.
80 mm
Total precipitation
78%
Avg. humidity
2 m/s
Avg. wind
0 ☀️
Sunny Days
3 ⛅️
Cloudy
16 🌦
Rainy
Our opinion: Santiago has OK weather in September.
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Average temperature in Santiago in September
Here are the expected maximum, average and minimum temperatures in Santiago for September based on the historical data.
Last Year
Historical Data
The expected average maximum temperature in September is +93°F with a maximum of +95°F and a minimum of +72°F.
The average maximum temperature goes up 0% by the end of the month, compared with the beginning of the month, from +95°F to +95°F.
Is Santiago warm or cold in September?
Santiago is typically hot in September.
Maximum temperatures go up compared to the previous month from +90°F to +90°F. The minimum temperature also goes up from +72°F to +72°F.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
September is the hottest month in Santiago, here is the comparison with other months:
Climate in Santiago in September
Santiago weather looks like this, on average, in September and the surrounding months.
August
September
October
Avg. temperature
+90°F
+90°F
+88°F
Min. temperature
+66°F
+66°F
+64°F
Max. temperature
+97°F
+97°F
+99°F
Rainfall
52 mm
80 mm
85 mm
Wind
2 m/s
2 m/s
1 m/s
Humidity
76%
78%
81%
Air pressure
1015 HPa
1013 HPa
1012 HPa
Sunny days
1
0
1
Cloudy days
5
3
3
Rainy days
19
16
15
Snowy days
0
0
0
September weather is still as ok as in August.The temperature levels stay the same in the area of +90°F for average maximum temperature during the day.Prepare for more rain. Average rainfall goes from 52 mm to 80 mm.Humidity rises from 76% to 78%.The average wind speed doesn’t change much during September, staying around 2 m/s.The days becoming less sunny, going from 1 sunny days in August to 0 in September.
October brings much the same weather, it remains ok.
Wind speed in Santiago in September based on historical data.
Last Year
Historical Data
The average wind speed is 2 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Santiago is gradually increasing during September, going from 2 m/s to 2 m/s over the course of the month.
Rain
Amount of rainfall in mm during September in Santiago based on historical data.
Last Year
Historical Data
Total precipitation in September is about 48 mm, with a 60% chance of rain on a typical day. The maximum amount of rainfall per day is around 12 mm, which is considered light rain.September is a pretty wet month with over 18 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
September is one of the rainiest months in Santiago, here is a comparison with other months, total mm:
Santiago wettest month is May, where a typical day has a 65% chance of precipitation and 106 mm of rainfall per day. February, on the other hand, is the driest month with a mere 50% chance of precipitation and 32 mm of rainfall per day.
How was the weather last September in Santiago?
This is the weather in Santiago in September 2024:
1 September
☀️
+95°F
2 September
☁️
+95°F
3 September
☁️
+95°F
4 September
☁️
+90°F
5 September
☁️
+95°F
6 September
☁️
+93°F
7 September
☀️
+93°F
8 September
☀️
+94°F
9 September
☀️
+87°F
10 September
☁️
+95°F
11 September
☀️
+95°F
12 September
☀️
+95°F
13 September
⛈️
+95°F
14 September
☁️
+93°F
15 September
🌧️
+93°F
16 September
☁️
+91°F
17 September
☁️
+93°F
18 September
☀️
+93°F
19 September
☀️
+93°F
20 September
☁️
+93°F
21 September
☁️
+95°F
22 September
☁️
+92°F
23 September
☁️
+91°F
24 September
☁️
+95°F
25 September
☁️
+93°F
26 September
☁️
+94°F
27 September
☀️
+91°F
28 September
☀️
+93°F
29 September
☁️
+93°F
30 September
☁️
+95°F
In September 2024 Santiago had 10 sunny days, 18 cloudy days, and 1 rainy days. The average maximum temperature was +93°F, with an absolute maximum of +95°F and a minimum of +88°F. The average humidity was 80%, with a maximum of 100% and a minimum of 41%. The average wind speed was 2 m/s, with a maximum of 10 m/s and a minimum of 0 m/s.
Are you planning a trip in September?
Climate Change Over the Years
This is how Santiago climate has changed over the last 43 years.
The climate in Santiago in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1979 (+83°F) and the highest in 2023 (+89°F). The driest year was 2018 with only 395 mm of rainfall, and the wettest year was 1979 with 1082 mm.
FAQ
Frequently asked questions about the weather in Santiago in September:
Is September a good time to visit Santiago?
It’s always a good time to visit Santiago, but the weather is changeable in September, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in Santiago in September?
Absolutely, September is hot in Santiago. Plan on beach and pool time, and ensure that you pack light and breathable options to stay comfortable.
Is Santiago rainy in September?
Santiago is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Santiago in September?
Usually, it’s not very sunny in Santiago in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
Other cities in Dominican Republic
Check out the weather for other cities in Dominican Republic.
For this page, we’ve looked at the typical weather in Santiago, 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.
