Average Weather in Santo Tomás Panama
In Santo Tomás, the wet season is overcast, the dry season is partly cloudy, and it is hot and oppressive year round. Over the course of the year, the temperature typically varies from 72°F to 92°F and is rarely below 70°F or above 96°F.
Based on the beach/pool score, the best time of year to visit Santo Tomás for hot-weather activities is from early December to early March.
The temperature in Santo Tomás varies so little throughout the year that it is not entirely meaningful to discuss hot and cold seasons.
Average High and Low Temperature
The figure below shows you a compact characterization of the entire year of hourly average temperatures. The horizontal axis is the day of the year, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.
Average Hourly Temperature
Ranong, Thailand (11,178 miles away); Kulim, Malaysia (11,474 miles); and Makassar, Indonesia (10,918 miles) are the far-away foreign places with temperatures most similar to Santo Tomás (view comparison).
In Santo Tomás, the average percentage of the sky covered by clouds experiences extreme seasonal variation over the course of the year.
The clearer part of the year in Santo Tomás begins around November 25 and lasts for 4.5 months, ending around April 10. On January 1, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 59% of the time, and overcast or mostly cloudy 41% of the time.
The cloudier part of the year begins around April 10 and lasts for 7.5 months, ending around November 25. On May 30, the cloudiest day of the year, the sky is overcast or mostly cloudy 95% of the time, and clear, mostly clear, or partly cloudy 5% of the time.
Cloud Cover Categories
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Santo Tomás varies significantly throughout the year.
The wetter season lasts 7.3 months, from April 29 to December 6, with a greater than 29% chance of a given day being a wet day. The chance of a wet day peaks at 51% on September 29.
The drier season lasts 4.8 months, from December 6 to April 29. The smallest chance of a wet day is 7% on January 26.
Among wet days, we distinguish between those that experience rain alone, snow alone, or a mixture of the two. Based on this categorization, the most common form of precipitation throughout the year is rain alone, with a peak probability of 51% on September 29.
Daily Chance of Precipitation
To show variation within the months and not just the monthly totals, we show the rainfall accumulated over a sliding 31-day period centered around each day of the year. Santo Tomás experiences extreme seasonal variation in monthly rainfall.
Rain falls throughout the year in Santo Tomás. The most rain falls during the 31 days centered around October 22, with an average total accumulation of 9.2 inches.
The least rain falls around February 21, with an average total accumulation of 0.6 inches.
Average Monthly Rainfall
The length of the day in Santo Tomás does not vary substantially over the course of the year, staying within 36 minutes of 12 hours throughout. In 2018, the shortest day is December 21, with 11 hours, 38 minutes of daylight; the longest day is June 21, with 12 hours, 37 minutes of daylight.
Hours of Daylight and Twilight
The earliest sunrise is at 6:10 AM on May 27, and the latest sunrise is 40 minutes later at 6:51 AM on January 29. The earliest sunset is at 6:07 PM on November 14, and the latest sunset is 46 minutes later at 6:53 PM on July 13.
Daylight saving time (DST) is not observed in Santo Tomás during 2018.
Sunrise & Sunset with Twilight
Santo Tomás experiences some seasonal variation in the perceived humidity.
The muggier period of the year lasts for 10 months, from March 17 to February 1, during which time the comfort level is muggy, oppressive, or miserable at least 92% of the time. The muggiest day of the year is August 20, with muggy conditions 100% of the time.
The least muggy day of the year is February 27, with muggy conditions 90% of the time.
Humidity Comfort Levels
The average hourly wind speed in Santo Tomás experiences mild seasonal variation over the course of the year.
The windier part of the year lasts for 2.5 months, from September 1 to November 16, with average wind speeds of more than 5.1 miles per hour. The windiest day of the year is October 9, with an average hourly wind speed of 6.5 miles per hour.
The calmer time of year lasts for 9.5 months, from November 16 to September 1. The calmest day of the year is April 28, with an average hourly wind speed of 3.8 miles per hour.
Average Wind Speed
The predominant average hourly wind direction in Santo Tomás varies throughout the year.
The wind is most often from the west for 7.7 months, from April 26 to December 16, with a peak percentage of 82% on October 2. The wind is most often from the north for 4.3 months, from December 16 to April 26, with a peak percentage of 66% on January 1.
Santo Tomás is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.The average water temperature does not vary significantly over the course of the year, remaining within 2°F of 83°F throughout.
Average Water Temperature
Best Time of Year to Visit
To characterize how pleasant the weather is in Santo Tomás throughout the year, we compute two travel scores.
The tourism score favors clear, rainless days with perceived temperatures between 65°F and 80°F. Based on this score, the best time of year to visit Santo Tomás for general outdoor tourist activities is from early December to early March, with a peak score in the first week of January.
The beach/pool score favors clear, rainless days with perceived temperatures between 75°F and 90°F. Based on this score, the best time of year to visit Santo Tomás for hot-weather activities is from early December to early March, with a peak score in the first week of January.
For each hour between 8:00 AM and 9:00 PM of each day in the analysis period (1980 to 2016), independent scores are computed for perceived temperature, cloud cover, and total precipitation. Those scores are combined into a single hourly composite score, which is then aggregated into days, averaged over all the years in the analysis period, and smoothed.
Our cloud cover score is 10 for fully clear skies, falling linearly to 9 for mostly clear skies, and to 1 for fully overcast skies.
Our precipitation score, which is based on the three-hour precipitation centered on the hour in question, is 10 for no precipitation, falling linearly to 9 for trace precipitation, and to 0 for 0.04 inches of precipitation or more.
Our tourism temperature score is 0 for perceived temperatures below 50°F, rising linearly to 9 for 65°F, to 10 for 75°F, falling linearly to 9 for 80°F, and to 1 for 90°F or hotter.
Our beach/pool temperature score is 0 for perceived temperatures below 65°F, rising linearly to 9 for 75°F, to 10 for 82°F, falling linearly to 9 for 90°F, and to 1 for 100°F or hotter.
Temperatures in Santo Tomás are sufficiently warm year round that it is not entirely meaningful to discuss the growing season in these terms. We nevertheless include the chart below as an illustration of the distribution of temperatures experienced throughout the year.
Time Spent in Various Temperature Bands and the Growing Season
Growing Degree Days
The average daily incident shortwave solar energy experiences significant seasonal variation over the course of the year.
The brighter period of the year lasts for 2.9 months, from January 17 to April 12, with an average daily incident shortwave energy per square meter above 6.0 kWh. The brightest day of the year is March 20, with an average of 6.7 kWh.
The darker period of the year lasts for 6.0 months, from May 16 to November 17, with an average daily incident shortwave energy per square meter below 4.0 kWh. The darkest day of the year is October 10, with an average of 3.4 kWh.
Average Daily Incident Shortwave Solar Energy
For the purposes of this report, the geographical coordinates of Santo Tomás are 8.390 deg latitude, -82.651 deg longitude, and 72 ft elevation.
The topography within 2 miles of Santo Tomás contains only modest variations in elevation, with a maximum elevation change of 144 feet and an average elevation above sea level of 73 feet. Within 10 miles contains only modest variations in elevation (925 feet). Within 50 miles contains very significant variations in elevation (11,296 feet).
The area within 2 miles of Santo Tomás is covered by grassland (52%), cropland (33%), and trees (11%), within 10 miles by grassland (37%) and water (20%), and within 50 miles by water (51%) and trees (27%).
This report illustrates the typical weather in Santo Tomás, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There is only a single weather station, David Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Santo Tomás.
At a distance of 24 kilometers from Santo Tomás, closer than our threshold of 150 kilometers, this station is deemed sufficiently nearby to be relied upon as our primary source for temperature and dew point records.
The station records are corrected for the elevation difference between the station and Santo Tomás according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.
Please note that the station records themselves may additionally have been back-filled using other nearby stations or the MERRA-2 reanalysis.
Time zones for aiports and weather stations are provided by AskGeo.com .