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January Weather in Kuliyapitiya Sri Lanka

Daily high temperatures increase by 2°F, from 87°F to 89°F, rarely falling below 83°F or exceeding 93°F.

Daily low temperatures are around 71°F, rarely falling below 67°F or exceeding 74°F. The lowest daily average low temperature is 71°F on January 28.

For reference, on March 19, the hottest day of the year, temperatures in Kuliyapitiya typically range from 75°F to 92°F, while on January 27, the coldest day of the year, they range from 71°F to 89°F.

Average High and Low Temperature in January in Kuliyapitiya

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 hourly average temperatures for the quarter of the year centered on January. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

Average Hourly Temperature in January in Kuliyapitiya

Average Hourly Temperature in January in KuliyapitiyaJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMDecFebcomfortablewarmwarmwarmhot
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 average hourly temperature, color coded into bands. The shaded overlays indicate night and civil twilight.

Carlos Fonseca Amador, Nicaragua (10,818 miles away); Manaus, Brazil (9,685 miles); and Maracanaú, Brazil (8,224 miles) are the far-away foreign places with temperatures most similar to Kuliyapitiya (view comparison).

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The month of January in Kuliyapitiya experiences decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 64% to 56%.

The clearest day of the month is January 31, with clear, mostly clear, or partly cloudy conditions 44% of the time.

For reference, on July 21, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 88%, while on March 4, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 46%.

Cloud Cover Categories in January in Kuliyapitiya

Cloud Cover Categories in January in KuliyapitiyaJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFebJan 136%Jan 136%Jan 3144%Jan 3144%Jan 1140%Jan 1140%Jan 2142%Jan 2142%clearmostly clearpartly cloudymostly cloudyovercast
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Kuliyapitiya, the chance of a wet day over the course of January is very rapidly decreasing, starting the month at 29% and ending it at 16%.

For reference, the year's highest daily chance of a wet day is 68% on October 27, and its lowest chance is 16% on February 3.

Probability of Precipitation in January in Kuliyapitiya

Probability of Precipitation in January in KuliyapitiyaJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%5%5%10%10%15%15%20%20%25%25%30%30%35%35%40%40%45%45%50%50%DecFebJan 129%Jan 129%Jan 3116%Jan 3116%Jan 1121%Jan 1121%Jan 2119%Jan 2119%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 month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day.

The average sliding 31-day rainfall during January in Kuliyapitiya is rapidly decreasing, starting the month at 3.2 inches, when it rarely exceeds 8.1 inches or falls below 0.4 inches, and ending the month at 1.8 inches, when it rarely exceeds 4.5 inches.

Average Monthly Rainfall in January in Kuliyapitiya

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 snowfall.

Over the course of January in Kuliyapitiya, the length of the day is essentially constant. The shortest day of the month is January 1, with 11 hours, 42 minutes of daylight and the longest day is January 31, with 11 hours, 48 minutes of daylight.

Hours of Daylight and Twilight in January in Kuliyapitiya

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 of the month in Kuliyapitiya is 6:22 AM on January 1 and the latest sunrise is 7 minutes later at 6:29 AM on January 31.

The earliest sunset is 6:04 PM on January 1 and the latest sunset is 13 minutes later at 6:17 PM on January 31.

Daylight saving time is not observed in Kuliyapitiya during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:54 AM and sets 12 hours, 34 minutes later, at 6:28 PM, while on December 21, the shortest day of the year, it rises at 6:17 AM and sets 11 hours, 42 minutes later, at 5:58 PM.

Sunrise & Sunset with Twilight in January in Kuliyapitiya

The solar day over the course of January. 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.

The figure below presents a compact representation of the sun's elevation (the angle of the sun above the horizon) and azimuth (its compass bearing) for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation.

Solar Elevation and Azimuth in January in Kuliyapitiya

Solar Elevation and Azimuth in January in KuliyapitiyaJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM2 AM2 AM4 AM4 AM6 AM6 AM8 AM8 AM10 AM10 AM12 PM12 PM2 PM2 PM4 PM4 PM6 PM6 PM8 PM8 PM10 PM10 PM12 AM12 AMDecFeb00101020202030304040505050600001010202030303040405050606060
northeastsouthwest
Solar elevation and azimuth over the course of January 2024. The black lines are lines of constant solar elevation (the angle of the sun above the horizon, in degrees). The background color fills indicate the azimuth (the compass bearing) of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions (northeast, southeast, southwest, and northwest).

The figure below presents a compact representation of key lunar data for January 2024. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

Moon Rise, Set & Phases in January in Kuliyapitiya

Moon Rise, Set & Phases in January in KuliyapitiyaJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMDecFebDec 135:03 AMDec 135:03 AMDec 276:04 AMDec 276:04 AMJan 115:28 PMJan 115:28 PMJan 2511:25 PMJan 2511:25 PMFeb 104:30 AMFeb 104:30 AMFeb 246:01 PMFeb 246:01 PM6:21 AM6:21 AM6:18 PM6:18 PM5:26 PM5:26 PM6:28 AM6:28 AM6:07 AM6:07 AM6:07 PM6:07 PM6:02 PM6:02 PM6:54 AM6:54 AM6:44 AM6:44 AM6:54 PM6:54 PM6:22 PM6:22 PM6:54 AM6:54 AM
The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. The shaded overlays indicate night and civil twilight.
Jan 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
79%-10:19 AMWNW10:28 PME4:03 AMN251,421 mi
2
70%-10:56 AMW11:11 PME4:43 AMN251,562 mi
3
61%-11:32 AMW11:53 PME5:22 AMS250,903 mi
4
50%-12:08 PMW-6:01 AMS249,415 mi
5
41%12:36 AME12:46 PMW-6:41 AMS247,131 mi
6
32%1:21 AMESE1:27 PMWSW-7:23 AMS244,158 mi
7
22%2:10 AMESE2:12 PMWSW-8:10 AMS240,677 mi
8
14%3:04 AMESE3:03 PMWSW-9:02 AMS236,939 mi
9
7%4:02 AMESE4:00 PMWSW-10:00 AMS233,254 mi
10
2%5:04 AMESE5:02 PMWSW-11:03 AMS229,957 mi
11
0%6:07 AMESE6:07 PMWSW-12:08 PMS227,364 mi
12
1%7:09 AMESE7:11 PMWSW-1:11 PMS225,710 mi
13
5%8:06 AMESE8:13 PMWSW-2:11 PMS225,105 mi
14
12%8:59 AMESE9:10 PMWSW-3:06 PMS225,519 mi
15
21%9:47 AME10:05 PMW-3:56 PMS226,810 mi
16
31%10:33 AME10:57 PMW-4:45 PMS228,766 mi
17
43%11:17 AME11:48 PMW-5:32 PMS231,154 mi
18
50%12:01 PMENE--6:19 PMN233,756 mi
19
65%-12:40 AMWNW12:47 PMENE7:09 PMN236,403 mi
20
75%-1:33 AMWNW1:35 PMENE8:00 PMN238,976 mi
21
84%-2:28 AMWNW2:26 PMENE8:54 PMN241,408 mi
22
91%-3:25 AMWNW3:20 PMENE9:50 PMN243,666 mi
23
96%-4:21 AMWNW4:15 PMENE10:45 PMN245,735 mi
24
99%-5:15 AMWNW5:10 PMENE11:39 PMN247,600 mi
25
100%-6:06 AMWNW6:02 PMENE--
26
100%-6:54 AMWNW6:53 PMENE12:29 AMN249,231 mi
27
99%-7:37 AMWNW7:40 PMENE1:16 AMN250,575 mi
28
96%-8:17 AMWNW8:24 PME2:00 AMN251,556 mi
29
91%-8:54 AMW9:07 PME2:40 AMN252,079 mi
30
85%-9:30 AMW9:49 PME3:19 AMS252,045 mi
31
78%-10:06 AMW10:31 PME3:58 AMS251,360 mi

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.

The chance that a given day will be muggy in Kuliyapitiya is decreasing during January, falling from 95% to 88% over the course of the month.

For reference, on April 22, the muggiest day of the year, there are muggy conditions 100% of the time, while on February 3, the least muggy day of the year, there are muggy conditions 88% of the time.

Humidity Comfort Levels in January in Kuliyapitiya

Humidity Comfort Levels in January in KuliyapitiyaJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%DecFebJan 195%Jan 195%Jan 3188%Jan 3188%Jan 1192%Jan 1192%Jan 2191%Jan 2191%miserablemiserableoppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortable
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The percentage of time spent at various humidity comfort levels, categorized by dew point.

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 Kuliyapitiya is gradually decreasing during January, decreasing from 11.8 miles per hour to 10.9 miles per hour over the course of the month.

For reference, on June 10, the windiest day of the year, the daily average wind speed is 15.0 miles per hour, while on March 25, the calmest day of the year, the daily average wind speed is 6.1 miles per hour.

The highest daily average wind speed during January is 11.8 miles per hour on January 15.

Average Wind Speed in January in Kuliyapitiya

Average Wind Speed in January in KuliyapitiyaJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mph14 mph14 mph16 mph16 mphDecFebJan 1511.8 mphJan 1511.8 mphJan 111.8 mphJan 111.8 mphJan 3110.9 mphJan 3110.9 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The wind direction in Kuliyapitiya during January is predominantly out of the north from January 1 to January 27 and the east from January 27 to January 31.

Wind Direction in January in Kuliyapitiya

Wind Direction in January in KuliyapitiyaNEJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%DecFebeastnorthwest
northeastsouthwest
The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.0 mph. The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions (northeast, southeast, southwest, and northwest).

Kuliyapitiya 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 surface water temperature in Kuliyapitiya is essentially constant during January, remaining around 82°F throughout.

The lowest average surface water temperature during January is 82°F on January 15.

Average Water Temperature in January in Kuliyapitiya

Average Water Temperature in January in KuliyapitiyaJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313180.0°F80.0°F80.5°F80.5°F81.0°F81.0°F81.5°F81.5°F82.0°F82.0°F82.5°F82.5°F83.0°F83.0°F83.5°F83.5°F84.0°F84.0°F84.5°F84.5°FDecFebJan 1582°FJan 1582°FJan 182°FJan 182°FJan 3182°FJan 3182°F
The daily average water temperature (purple line), with 25th to 75th and 10th to 90th percentile bands.

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 Kuliyapitiya 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 in January in Kuliyapitiya

Time Spent in Various Temperature Bands and the Growing Season in January in KuliyapitiyaJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFeb100%Jan 16100%Jan 16comfortablewarmhot
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 percentage of time spent in various temperature bands. 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.

The average accumulated growing degree days in Kuliyapitiya are rapidly increasing during January, increasing by 860°F, from 29°F to 890°F, over the course of the month.

Growing Degree Days in January in Kuliyapitiya

Growing Degree Days in January in KuliyapitiyaJan1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930303131100°F100°F200°F200°F300°F300°F400°F400°F500°F500°F600°F600°F700°F700°F800°F800°F900°F900°FDecFebJan 129°FJan 129°FJan 31890°FJan 31890°FJan 11315°FJan 11315°FJan 21601°FJan 21601°F
The average growing degree days accumulated over the course of January, with 25th to 75th and 10th to 90th percentile bands.

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 in Kuliyapitiya is gradually increasing during January, rising by 1.0 kWh, from 5.1 kWh to 6.1 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in January in Kuliyapitiya

Average Daily Incident Shortwave Solar Energy in January in KuliyapitiyaJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhDecFebJan 15.1 kWhJan 15.1 kWhJan 316.1 kWhJan 316.1 kWhJan 115.5 kWhJan 115.5 kWhJan 215.8 kWhJan 215.8 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.

For the purposes of this report, the geographical coordinates of Kuliyapitiya are 7.469 deg latitude, 80.040 deg longitude, and 108 ft elevation.

The topography within 2 miles of Kuliyapitiya contains only modest variations in elevation, with a maximum elevation change of 151 feet and an average elevation above sea level of 127 feet. Within 10 miles contains only modest variations in elevation (955 feet). Within 50 miles contains very significant variations in elevation (6,191 feet).

The area within 2 miles of Kuliyapitiya is covered by cropland (69%) and trees (29%), within 10 miles by cropland (58%) and trees (33%), and within 50 miles by water (36%) and cropland (29%).

This report illustrates the typical weather in Kuliyapitiya, 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 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Kuliyapitiya.

For each station, the records are corrected for the elevation difference between that station and Kuliyapitiya 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 Kuliyapitiya is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Kuliyapitiya and a given station.

The stations contributing to this reconstruction are:

To get a sense of how much these sources agree with each other, you can view a comparison of Kuliyapitiya and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

Other Data

All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , 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 airports and weather stations are provided by AskGeo.com .

Maps are © OpenStreetMap contributors.

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.

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