The sea in Puerto Rico is warm enough for swimming all year round: the water temperature ranges from 26 °C (79 °F) between January and March to 29 °C (84 °F) between August and October, as can be seen from the sea temperature near San Juan. Climate Records since 1898 . There is a margin of error and these forecasts are to be considered as general information only. For reference, on May 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 73%, while on January 11, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 82%. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. The lowest daily average high temperature is 83°F on January 21. It is not ideal 100%, but the weather in Puerto Rico in january is, according to seasonal norms, quite good averywhere: in Arecibo, Caguas‎, Mayagüez‎, Bayamón, Ponce and San Juan. Consider visiting Puerto Rico in the months of February, March, June, October, for the best beach weather.Also consider one of our other suggestions for January. The thin dotted line is the corresponding average liquid-equivalent snowfall. We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Year * Month * Day * Data is available up to December 11, 2020. On average, it rains or snows a smalll amount: consistently 1 times per month. But this is pretty moderate and it will not be continuous.With a good weather, the month of january is a recommended month to go in that area in Puerto Rico. Average Weather in January in Puerto Rico Spain. In january, the mean temperature in San Juan is 81°F (maximum temperature is 83°F and minimum temperature is 77°F). The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands. For reference, on June 11, the muggiest day of the year, there are muggy conditions 100% of the time, while on March 8, the least muggy day of the year, there are muggy conditions 81% of the time. Weather data is prone to errors, outages, and other defects. Though many factors can come into play when choosing your beach destination, the beach weather will often be a deciding factor. In January, daytime temperatures typically fall between 72F or 22C to 83F or 28C, rising to an annual high of 78F or 26C to 89F or 32C through June, July, August, September and October. Daytime maximum temperatures average around a steamy 33°C (91°F), whilst at night 21°C (70°F) is normal. The average maximum temperature lies around 28.0°C (82.4°F). We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. The clearest day of the month is January 11, with clear, mostly clear, or partly cloudy conditions 82% of the time. Weather History for Places in Puerto Rico . Around nine hours of sunshine are expected each day in January, while the sea is a mild yet refreshing 19°C at this time of year. Ocean Temperature at San Juan, Puerto Rico averages 77 degrees Fahrenheit (25 degrees Celsius) in January. Around 4.5 inches of rain is expected to fall over 20 days so it may be wise to pack a light jacket along with the sun cream. (Weather station: Luis Munoz Marin, Puerto Rico). From the start to the end of the month, the length of the day increases by 17 minutes, implying an average daily increase of 33 seconds, and weekly increase of 3 minutes, 54 seconds. Marine / ocean climate data updated daily, surface sea temperatures and recorded in degrees centigrade and farenheit. The shaded overlays indicate night and civil twilight. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . How warm is the sea around Ponce in January? How is the weather in Puerto Rico in january? Driest- Lowest total rainfall for the calendar month. The coldest month is January with an average low of 70 °F (21 °C) and an average high of 83 °F (28 °C). 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