The best times to visit Rio San Juan for ideal weather are
June 25th to October 28th
based on average temperature and humidity from NOAA (the National Oceanic and Atmospheric Administration). Read below for more weather and travel details.
Rio San Juan Travel Guide
Other Rio San Juan Travel Info
Weather in Rio San Juan
Average temperatures in Rio San Juan vary very little. Considering humidity, temperatures feel hot all year with a chance of rain throughout most of the year. The area is far less temperate than some — in the 4th percentile for pleasant weather — compared to tourist destinations worldwide. Weeks with ideal weather are listed above. If you’re looking for the very warmest time to visit Rio San Juan, the hottest months are August, July, and then September. See average monthly temperatures below. The warmest time of year is generally early to mid August where highs are regularly around 92.5°F (33.6°C) with temperatures rarely dropping below 73.5°F (23.1°C) at night.
Rio San Juan Temperatures (Fahrenheit)
Rio San Juan Temperatures (Celsius)
The way we experience weather isn’t all about temperature. Higher temperatures affect us much more at higher humidity, and colder temperatures feel piercing with high winds. Our perceived temperatures factor in humidity and wind chill to better represent how hot or cold the day feels to a person.
Rio San Juan Perceived Temperature (F)
Rio San Juan Perceived Temperature (C)
Average Rio San Juan Temperatures by Month
Daily highs (averaged for the month) usually give the best indication of the weather. A significantly lower mean and low generally just means it gets colder at night.
|Month||Avg. High (°F)||Avg. Mean (°F)||Avg. Low (°F)|
|Month||Avg. High (°C)||Avg. Mean (°C)||Avg. Low (°C)|
Precipitation (Rain or Snow)
If dry weather is what you’re after, the months with the lowest chance of significant precipitation in Rio San Juan are July, June, and then September. Note that we define “significant precipitation” as .1 inches or more in this section. The lowest chance of rain or snow occurs around mid October. For example, on the week of October 15th there are no days of precipitation on average. By contrast, it’s most likely to rain or snow in mid November with an average of 3 days of significant precipitation the week of November 12th.
When can you find snow in Rio San Juan? Weather stations report no annual snow. Please note that a value of 0 for snow in the graph below may either mean there was no snow, or that snow is unreported.
Chance of Precipitation
The graph below shows the % chance of rainy and snowy days in Rio San Juan.
Snow on the Ground
The graph below shows the average snow on the ground in Rio San Juan (in).
Average Rain and Snow by Month
|Month||Daily Chance of Rain||Average Snow Depth (in)||Total Precipitation (in)|
|Month||Daily Chance of Rain||Average Snow Depth (cm)||Total Precipitation (cm)|
Humidity and Wind
Rio San Juan has some extremely humid months, and high humidity throughout the year. The least humid month is July (76.3% relative humidity), and the most humid month is November (82.8%).
Wind in Rio San Juan is usually calm. The windiest month is August, followed by July and April. August’s average wind speed of around 6.4 knots (7.3 MPH or 11.8 KPH) is considered “a light breeze.” Maximum sustained winds (the highest speed for the day lasting more than a few moments) are at their highest in mid July where average top sustained speeds reach 14.1 knots, which is considered a moderate breeze.
Relative Humidity (%)
The graph below shows the average % humidity by month in Rio San Juan.
The graph below shows wind speed (max and average) in knots.
Average Wind Speeds
Show Wind Speeds
All wind speeds are in knots. 1 knot = 1.15 MPH or 1.85 KPH.
|Month||Avg. Wind||Avg. Wind Feel||Sustained High Wind||High Wind Feel|
|Jan||4.2||Light breeze||10.5||Gentle breeze|
|Feb||5.1||Light breeze||11.7||Significant breeze|
|Mar||5.1||Light breeze||11.7||Gentle breeze|
|Apr||5.8||Light breeze||12.1||Significant breeze|
|May||5.3||Light breeze||11.7||Gentle breeze|
|Jun||5.3||Light breeze||12.1||Significant breeze|
|Jul||6.3||Light breeze||13.4||Gentle breeze|
|Aug||6.4||Light breeze||13.3||Significant breeze|
|Sep||4.9||Light breeze||11.6||Gentle breeze|
|Oct||4.3||Light breeze||10.7||Gentle breeze|
|Nov||4.1||Light breeze||10||Gentle breeze|
|Dec||4.4||Light breeze||10.2||Gentle breeze|
Show Relative Humidity by Month
|Month||Avg. Relative Humidity|
Is it Safe to Travel to Rio San Juan?
Our best data indicates this area is somewhat safe. As of Oct 07, 2019 there are travel warnings for the Dominican Republic; exercise a high degree of caution. Check this page for any recent changes or regions to avoid: Travel Advice and Advisories. This advisory was last updated on Aug 28, 2019.
The Busiest and Least Crowded Months
The busiest month for tourism in Rio San Juan, Dominican Republic is October, followed by May and March. Prices for hotels and flights will be most expensive during these months, though you can save if you purchase well in advance. Tourists are unlikely to visit Rio San Juan in February. Those willing to visit at these times will likely find it the least expensive month.
Estimated Tourism by Month
Most Popular Months to Visit
Overall Rio San Juan Travel Experience by Season
Spring (March through May)
Humidity and temperatures combine to make this season feel warm. Highs range from 89.6°F (32°C) and 83.3°F (28.5°C) with warmer temperatures in the later months. Rain is somewhat common with 7 to 10 days of significant precipitation per month. Spring is the second busiest for tourism, which makes it a good time for those looking for things to do.
Summer (June through August)
The middle-year months have very comfortable weather with high temperatures that are quite warm. These months see the least precipitation with 4 to 6 days of precipitation per month. June – August is fairly slow season for tourism in Rio San Juan, so lodging and other accommodations may cost slightly less.
Fall (September through November)
Fall daily highs range from 92.5°F (33.6°C) and 86°F (30°C), which will feel very nice given the humidity and wind. It rains or snows a significant amount: 6 to 11 days per month. Tourism is the busiest during these months due to the weather, so hotels may be higher priced.
Winter (December through February)
Weather is perfect this time of year in Rio San Juan to be enjoyable for warm weather travelers. The average high during this season is between 85.8°F (29.9°C) and 83.7°F (28.7°C). On average, it rains or snows a fair amount: 7 to 10 times per month. These times of year are the slowest with tourists.
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