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Average Weather in Sula Philippines

In Sula, 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 70°F to 92°F and is rarely below 66°F or above 95°F.

Climate Summary

hotwarmhotJanFebMarAprMayJunJulAugSepOctNovDec56%56%7%7%overcastclearprecipitation: 20.6 inprecipitation: 20.6 in0.3 in0.3 inmuggy: 100%muggy: 100%75%75%tourism score: 7.3tourism score: 7.33.03.0
Click on each chart for more information.

Based on the tourism score, the best time of year to visit Sula for warm-weather activities is from early December to mid March.

Temperature

The hot season lasts for 1.6 months, from March 28 to May 14, with an average daily high temperature above 91°F. The hottest day of the year is April 23, with an average high of 92°F and low of 76°F.

The cool season lasts for 3.5 months, from October 19 to February 6, with an average daily high temperature below 86°F. The coldest day of the year is January 15, with an average low of 70°F and high of 85°F.

Average High and Low Temperature

Average High and Low Temperature in SulahotcoolcoolJanFebMarAprMayJunJulAugSepOctNovDec0°F10°F20°F30°F40°F50°F60°F70°F80°F90°F100°FJan 1585°FJan 1585°FApr 2392°FApr 2392°F70°F70°F76°F76°FOct 1986°FOct 1986°F74°F74°F74°F74°F70°F70°FLowHigh
The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures.

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

Average Hourly Temperature in SulaJanFebMarAprMayJunJulAugSepOctNovDec12 AM4 AM8 AM12 PM4 PM8 PM12 AMcomfortablecomfortablewarmhothotcomfortablecomfortable
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The shaded overlays indicate night and civil twilight.

Masaya, Nicaragua (9,826 miles away) is the far-away foreign place with temperatures most similar to Sula (view comparison).

Clouds

In Sula, the average percentage of the sky covered by clouds experiences significant seasonal variation over the course of the year.

The clearer part of the year in Sula begins around November 17 and lasts for 5.1 months, ending around April 22. On February 20, the clearest day of the year, the sky is clear, mostly clear, or partly cloudy 56% of the time, and overcast or mostly cloudy 44% of the time.

The cloudier part of the year begins around April 22 and lasts for 6.9 months, ending around November 17. On June 7, the cloudiest day of the year, the sky is overcast or mostly cloudy 93% of the time, and clear, mostly clear, or partly cloudy 7% of the time.

Cloud Cover Categories

Cloud Cover Categories in SulaclearerclearercloudierJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%Feb 2056%Feb 2056%Jun 77%Jun 77%Nov 1731%Nov 1731%Apr 2232%Apr 2232%clearmostly clearpartly cloudymostly cloudyovercast
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds: clear < 20% < mostly clear < 40% < partly cloudy < 60% < mostly cloudy < 80% < overcast.

Precipitation

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. The chance of wet days in Sula varies very significantly throughout the year.

The wetter season lasts 5.0 months, from May 14 to October 15, with a greater than 40% chance of a given day being a wet day. The chance of a wet day peaks at 77% on August 10.

The drier season lasts 7.0 months, from October 15 to May 14. The smallest chance of a wet day is 4% on January 16.

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 77% on August 10.

Daily Chance of Precipitation

Daily Chance of Precipitation in SulawetdrydryJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Aug 1077%Aug 1077%Jan 164%Jan 164%Jan 16%Jan 16%May 1440%May 1440%Oct 1540%Oct 1540%rain
The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day).

Rainfall

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. Sula experiences extreme seasonal variation in monthly rainfall.

The rainy period of the year lasts for 9.5 months, from March 16 to January 1, with a sliding 31-day rainfall of at least 0.5 inches. The most rain falls during the 31 days centered around August 7, with an average total accumulation of 20.6 inches.

The rainless period of the year lasts for 2.5 months, from January 1 to March 16. The least rain falls around January 15, with an average total accumulation of 0.3 inches.

Average Monthly Rainfall

The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average liquid-equivalent snowfall.

Sun

The length of the day in Sula varies over the course of the year. In 2017, the shortest day is December 22, with 11 hours, 13 minutes of daylight; the longest day is June 21, with 13 hours, 3 minutes of daylight.

Hours of Daylight and Twilight

The number of hours during which the Sun is visible (black line). From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night.

The earliest sunrise is at 5:26 AM on June 4, and the latest sunrise is 1 hour, 2 minutes later at 6:28 AM on January 22. The earliest sunset is at 5:24 PM on November 22, and the latest sunset is 1 hour, 9 minutes later at 6:33 PM on July 8.

Daylight saving time (DST) is not observed in Sula during 2017.

Sunrise & Sunset with Twilight

Sunrise & Sunset with Twilight in SulaJanFebMarAprMayJunJulAugSepOctNovDec12 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMJun 45:26 AMJun 45:26 AM6:33 PMJul 86:33 PMJul 8Nov 225:24 PMNov 225:24 PM6:28 AMJan 226:28 AMJan 22daynightnightnightnightSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of the year 2017. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray.

Humidity

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

Sula experiences some seasonal variation in the perceived humidity.

The muggier period of the year lasts for 10 months, from February 19 to January 1, during which time the comfort level is muggy, oppressive, or miserable at least 81% of the time. The muggiest day of the year is August 4, with muggy conditions 100% of the time.

The least muggy day of the year is January 26, with muggy conditions 75% of the time.

Humidity Comfort Levels

Humidity Comfort Levels in SulamuggyJanFebMarAprMayJunJulAugSepOctNovDec0%10%20%30%40%50%60%70%80%90%100%Jan 2675%Jan 2675%100%Aug 4100%Aug 4miserablemiserableoppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortable
The percentage of time spent at various humidity comfort levels, categorized by dew point: dry < 55°F < comfortable < 60°F < humid < 65°F < muggy < 70°F < oppressive < 75°F < miserable.

Wind

This section discusses the wide-area hourly average wind vector (speed and direction) at 10 meters above the ground. 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.

The average hourly wind speed in Sula experiences mild seasonal variation over the course of the year.

The windier part of the year lasts for 5.2 months, from November 1 to April 7, with average wind speeds of more than 6.4 miles per hour. The windiest day of the year is December 18, with an average hourly wind speed of 7.4 miles per hour.

The calmer time of year lasts for 6.8 months, from April 7 to November 1. The calmest day of the year is October 2, with an average hourly wind speed of 5.3 miles per hour.

Average Wind Speed

Average Wind Speed in SulawindywindyJanFebMarAprMayJunJulAugSepOctNovDec0 mph1 mph2 mph3 mph4 mph5 mph6 mph7 mph8 mph9 mph10 mph11 mph12 mphDec 187.4 mphDec 187.4 mphOct 25.3 mphOct 25.3 mphApr 76.4 mphApr 76.4 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The predominant average hourly wind direction in Sula varies throughout the year.

The wind is most often from the west for 6.0 days, from May 25 to May 31 and for 2.5 months, from July 13 to September 28, with a peak percentage of 50% on August 20. The wind is most often from the south for 1.4 months, from May 31 to July 13, with a peak percentage of 44% on June 28. The wind is most often from the east for 7.9 months, from September 28 to May 25, with a peak percentage of 83% on January 1.

Wind Direction

Wind Direction in SulaESWEJanFebMarAprMayJunJulAugSepOctNovDec0%100%20%80%40%60%60%40%80%20%100%0%westsoutheastnorth
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions (north, east, south, and west), excluding hours in which the mean wind speed is less than 1 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Water Temperature

Sula 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 experiences some seasonal variation over the course of the year.

The time of year with warmer water lasts for 2.7 months, from April 25 to July 15, with an average temperature above 85°F. The day of the year with the warmest water is May 22, with an average temperature of 86°F.

The time of year with cooler water lasts for 2.4 months, from December 31 to March 10, with an average temperature below 82°F. The day of the year with the coolest water is February 3, with an average temperature of 81°F.

Average Water Temperature

The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

Best Time of Year to Visit

To characterize how pleasant the weather is in Sula 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 Sula for general outdoor tourist activities is from early December to mid March, with a peak score in the third week of January.

Tourism Score

Tourism Score in Sulabest timeJanFebMarAprMayJunJulAugSepOctNovDec02468107.37.33.03.0 precipitationprecipitationtemperaturetemperaturetourism score
The tourism score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

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 Sula for hot-weather activities is from late November to mid April, with a peak score in the first week of March.

Beach/Pool Score

Beach/Pool Score in Sulabest timeJanFebMarAprMayJunJulAugSepOctNovDec02468107.27.23.33.3 precipitationprecipitationcloudscloudstemperaturetemperaturebeach/pool score
The beach/pool score (filled area), and its constituents: the temperature score (red line), the cloud cover score (blue line), and the precipitation score (green line).

Methodology

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.

Growing Season

Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 32°F) in the year (the calendar year in the Northern Hemisphere, or from July 1 until June 30 in the Southern Hemisphere).

Temperatures in Sula 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

Time Spent in Various Temperature Bands and the Growing Season in SulaJanFebMarAprMayJunJulAugSepOctNovDec0%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%100%Jan 1100%Jan 1100%Jul 3100%Jul 3comfortablewarmhot
The percentage of time spent in various temperature bands: frigid < 15°F < freezing < 32°F < very cold < 45°F < cold < 55°F < cool < 65°F < comfortable < 75°F < warm < 85°F < hot < 95°F < sweltering. The black line is the percentage chance that a given day is within the growing season.

Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. In this report, we use a base of 50°F and a cap of 86°F.

Growing Degree Days

The average growing degree days accumulated over the course of the year, with 25th to 75th and 10th to 90th percentile bands.

Solar Energy

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. Shortwave radiation includes visible light and ultraviolet radiation.

The average daily incident shortwave solar energy experiences some seasonal variation over the course of the year.

The brighter period of the year lasts for 2.2 months, from February 22 to April 30, with an average daily incident shortwave energy per square meter above 6.1 kWh. The brightest day of the year is March 31, with an average of 6.6 kWh.

The darker period of the year lasts for 4.0 months, from June 6 to October 7, with an average daily incident shortwave energy per square meter below 4.6 kWh. The darkest day of the year is August 11, with an average of 4.1 kWh.

Average Daily Incident Shortwave Solar Energy

Average Daily Incident Shortwave Solar Energy in SulabrightdarkJanFebMarAprMayJunJulAugSepOctNovDec0 kWh1 kWh2 kWh3 kWh4 kWh5 kWh6 kWh7 kWh8 kWhMar 316.6 kWhMar 316.6 kWhAug 114.1 kWhAug 114.1 kWhFeb 226.1 kWhFeb 226.1 kWhJun 64.6 kWhJun 64.6 kWhOct 74.6 kWhOct 74.6 kWh
The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands.

Topography

For the purposes of this report, the geographical coordinates of Sula are 15.457 deg latitude, 120.396 deg longitude, and 551 ft elevation.

The topography within 2 miles of Sula contains very significant variations in elevation, with a maximum elevation change of 1,381 feet and an average elevation above sea level of 537 feet. Within 10 miles contains very significant variations in elevation (3,238 feet). Within 50 miles contains large variations in elevation (6,749 feet).

The area within 2 miles of Sula is covered by cropland (55%) and trees (31%), within 10 miles by cropland (47%) and trees (39%), and within 50 miles by cropland (44%) and water (24%).

Data Sources

This report illustrates the typical weather in Sula, 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 are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Sula.

For each station, the records are corrected for the elevation difference between that station and Sula according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Sula is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Sula and a given station.

The stations contributing to this reconstruction are: Clark International Airport (48%, 35 kilometers, southeast); Iba (28%, 48 kilometers, west); Lingayen Airfield (17%, 70 kilometers, north); and Dr. Juan C. Angara Airport (7%, 122 kilometers, east).

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Tables of the Sun, Moon and Planets , by Jean Meeus.

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 . This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid.

Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations.

Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database .

Time zones for aiports and weather stations are provided by AskGeo.com .

Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

Disclaimer

The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands.

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.