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January Weather in Katoro Tanzania

Daily high temperatures are around 82°F, rarely falling below 76°F or exceeding 89°F.

Daily low temperatures are around 60°F, rarely falling below 57°F or exceeding 63°F. The lowest daily average low temperature is 60°F on January 15.

For reference, on September 20, the hottest day of the year, temperatures in Katoro typically range from 60°F to 86°F, while on July 15, the coldest day of the year, they range from 56°F to 84°F.

Average High and Low Temperature in January in Katoro

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 Katoro

Average Hourly Temperature in January in KatoroJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMDecFebcoolcomfortablecomfortablewarmcool
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.

San José de Cusmapa, Nicaragua (8,194 miles away) and Brasília, Federal District, Brazil (5,492 miles) are the far-away foreign places with temperatures most similar to Katoro (view comparison).

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The month of January in Katoro experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 76% throughout the month. The highest chance of overcast or mostly cloudy conditions is 77% on January 31.

The clearest day of the month is January 1, with clear, mostly clear, or partly cloudy conditions 24% of the time.

For reference, on January 31, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 77%, while on July 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 63%.

Cloud Cover Categories in January in Katoro

Cloud Cover Categories in January in KatoroJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFebJul 2363%Jul 2363%Jan 124%Jan 124%Jan 3123%Jan 3123%Jan 1124%Jan 1124%Jan 2124%Jan 2124%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 Katoro, the chance of a wet day over the course of January is essentially constant, remaining around 50% throughout.

For reference, the year's highest daily chance of a wet day is 66% on November 20, and its lowest chance is 2% on July 2.

Probability of Precipitation in January in Katoro

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 Katoro is essentially constant, remaining about 3.2 inches throughout, and rarely exceeding 5.9 inches or falling below 1.2 inches.

The lowest average 31-day accumulation is 3.2 inches on January 25.

Average Monthly Rainfall in January in Katoro

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 Katoro, the length of the day is essentially constant. The shortest day of the month is January 31, with 12 hours, 15 minutes of daylight and the longest day is January 1, with 12 hours, 18 minutes of daylight.

Hours of Daylight and Twilight in January in Katoro

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 Katoro is 6:46 AM on January 1 and the latest sunrise is 12 minutes later at 6:58 AM on January 31.

The earliest sunset is 7:04 PM on January 1 and the latest sunset is 9 minutes later at 7:13 PM on January 31.

Daylight saving time is not observed in Katoro during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 6:41 AM and sets 12 hours, 18 minutes later, at 6:59 PM, while on June 20, the shortest day of the year, it rises at 6:55 AM and sets 11 hours, 57 minutes later, at 6:52 PM.

Sunrise & Sunset with Twilight in January in Katoro

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 Katoro

Solar Elevation and Azimuth in January in KatoroJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMDecFeb0010102020203030404050505060607080000101020203030304040505060606070
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 Katoro

Moon Rise, Set & Phases in January in KatoroJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMDecFebDec 132:33 AMDec 132:33 AMDec 273:34 AMDec 273:34 AMJan 112:58 PMJan 112:58 PMJan 258:55 PMJan 258:55 PMFeb 102:00 AMFeb 102:00 AMFeb 243:31 PMFeb 243:31 PM6:48 AM6:48 AM7:33 PM7:33 PM6:40 PM6:40 PM6:54 AM6:54 AM6:35 AM6:35 AM7:20 PM7:20 PM7:11 PM7:11 PM7:25 AM7:25 AM7:20 AM7:20 AM7:55 PM7:55 PM7:19 PM7:19 PM7:35 AM7:35 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
78%-10:59 AMW11:23 PME4:52 AMN251,484 mi
2
69%-11:40 AMW-5:32 AMN251,521 mi
3
60%12:01 AME12:20 PMW-6:10 AMN250,752 mi
4
50%12:39 AME1:01 PMW-6:49 AMS249,153 mi
5
40%1:18 AME1:43 PMWSW-7:29 AMS246,769 mi
6
30%1:59 AMESE2:29 PMWSW-8:13 AMS243,716 mi
7
21%2:44 AMESE3:19 PMWSW-9:00 AMS240,184 mi
8
13%3:35 AMESE4:14 PMWSW-9:53 AMS236,435 mi
9
6%4:31 AMESE5:14 PMWSW-10:51 AMS232,782 mi
10
2%5:32 AMESE6:17 PMWSW-11:54 AMS229,563 mi
11
0%6:35 AMESE7:20 PMWSW-12:59 PMS227,085 mi
12
1%7:39 AMESE8:21 PMWSW-2:01 PMS225,568 mi
13
6%8:40 AMESE9:17 PMWSW-3:00 PMS225,103 mi
14
13%9:37 AMESE10:09 PMW-3:54 PMS225,645 mi
15
22%10:30 AME10:58 PMW-4:45 PMS227,038 mi
16
33%11:21 AME11:44 PMW-5:33 PMN229,065 mi
17
44%12:10 PME--6:20 PMN231,492 mi
18
50%-12:30 AMW12:59 PMENE7:08 PMN234,109 mi
19
67%-1:18 AMWNW1:50 PMENE7:57 PMN236,752 mi
20
77%-2:07 AMWNW2:43 PMENE8:49 PMN239,309 mi
21
85%-2:58 AMWNW3:37 PMENE9:44 PMN241,720 mi
22
92%-3:52 AMWNW4:33 PMENE10:40 PMN243,954 mi
23
97%-4:47 AMWNW5:28 PMENE11:35 PMN245,997 mi
24
98%-5:42 AMWNW6:21 PMENE--
25
100%-6:35 AMWNW7:11 PMENE12:29 AMN247,833 mi
26
100%-7:25 AMWNW7:57 PMENE1:19 AMN249,429 mi
27
99%-8:11 AMWNW8:40 PMENE2:05 AMN250,729 mi
28
95%-8:55 AMWNW9:20 PME2:48 AMN251,655 mi
29
91%-9:36 AMW9:58 PME3:29 AMN252,109 mi
30
84%-10:17 AMW10:36 PME4:08 AMN251,993 mi
31
77%-10:57 AMW11:14 PME4:46 AMN251,214 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 Katoro is essentially constant during January, remaining within 1% of 31% throughout.

The lowest chance of a muggy day during January is 31% on January 1.

For reference, on April 7, the muggiest day of the year, there are muggy conditions 41% of the time, while on July 2, the least muggy day of the year, there are muggy conditions 1% of the time.

Humidity Comfort Levels in January in Katoro

Humidity Comfort Levels in January in KatoroJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%DecFebJan 131%Jan 131%Jan 3132%Jan 3132%Jan 1131%Jan 1131%Jan 2132%Jan 2132%muggymuggyhumidhumidcomfortablecomfortable
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 Katoro is essentially constant during January, remaining around 3.9 miles per hour throughout.

For reference, on August 10, the windiest day of the year, the daily average wind speed is 7.1 miles per hour, while on January 19, the calmest day of the year, the daily average wind speed is 3.8 miles per hour.

The lowest daily average wind speed during January is 3.8 miles per hour on January 19.

Average Wind Speed in January in Katoro

The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The hourly average wind direction in Katoro throughout January is predominantly from the north, with a peak proportion of 47% on January 1.

Wind Direction in January in Katoro

Wind Direction in January in KatoroNSJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%DecFebsoutheastnorthwest
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).

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 Katoro 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 Katoro

Time Spent in Various Temperature Bands and the Growing Season in January in KatoroJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%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 16coolcomfortablewarmhot
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 Katoro are rapidly increasing during January, increasing by 608°F, from 3,823°F to 4,432°F, over the course of the month.

Growing Degree Days in January in Katoro

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 Katoro is essentially constant during January, remaining within 0.1 kWh of 5.7 kWh throughout.

Average Daily Incident Shortwave Solar Energy in January in Katoro

Average Daily Incident Shortwave Solar Energy in January in KatoroJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhDecFebJan 15.6 kWhJan 15.6 kWhJan 315.8 kWhJan 315.8 kWhJan 115.6 kWhJan 115.6 kWhJan 215.7 kWhJan 215.7 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 Katoro are -3.020 deg latitude, 31.896 deg longitude, and 4,255 ft elevation.

The topography within 2 miles of Katoro contains only modest variations in elevation, with a maximum elevation change of 407 feet and an average elevation above sea level of 4,154 feet. Within 10 miles contains only modest variations in elevation (823 feet). Within 50 miles also contains very significant variations in elevation (1,873 feet).

The area within 2 miles of Katoro is covered by cropland (54%) and shrubs (43%), within 10 miles by cropland (41%) and trees (29%), and within 50 miles by trees (35%) and cropland (29%).

This report illustrates the typical weather in Katoro, 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, Mwanza Airport, in our network suitable to be used as a proxy for the historical temperature and dew point records of Katoro.

At a distance of 132 kilometers from Katoro, 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 Katoro 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.

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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