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January Weather in Formosa Brazil

Daily high temperatures are around 83°F, rarely falling below 76°F or exceeding 89°F.

Daily low temperatures are around 67°F, rarely falling below 63°F or exceeding 70°F.

For reference, on September 29, the hottest day of the year, temperatures in Formosa typically range from 64°F to 86°F, while on July 11, the coldest day of the year, they range from 55°F to 79°F.

Average High and Low Temperature in January in Formosa

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 Formosa

Average Hourly Temperature in January in FormosaJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMDecFebcomfortablecomfortablewarm
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.

Tegucigalpa, Honduras (3,410 miles away) is the far-away foreign place with temperatures most similar to Formosa (view comparison).

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The month of January in Formosa experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 84% to 77%.

The clearest day of the month is January 29, with clear, mostly clear, or partly cloudy conditions 23% of the time.

For reference, on December 10, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 86%, while on July 30, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 77%.

Cloud Cover Categories in January in Formosa

Cloud Cover Categories in January in FormosaJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%DecFebJan 116%Jan 116%Jan 3123%Jan 3123%Jan 1118%Jan 1118%Jan 2120%Jan 2120%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 Formosa, the chance of a wet day over the course of January is rapidly decreasing, starting the month at 71% and ending it at 63%.

For reference, the year's highest daily chance of a wet day is 78% on December 5, and its lowest chance is 1% on July 28.

Probability of Precipitation in January in Formosa

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 Formosa is rapidly decreasing, starting the month at 8.3 inches, when it rarely exceeds 12.7 inches or falls below 4.5 inches, and ending the month at 7.1 inches, when it rarely exceeds 13.3 inches or falls below 2.7 inches.

Average Monthly Rainfall in January in Formosa

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 Formosa, the length of the day is essentially constant. The shortest day of the month is January 31, with 12 hours, 47 minutes of daylight and the longest day is January 1, with 13 hours, 2 minutes of daylight.

Hours of Daylight and Twilight in January in Formosa

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 Formosa is 5:41 AM on January 1 and the latest sunrise is 17 minutes later at 5:58 AM on January 31.

The earliest sunset is 6:43 PM on January 1 and the latest sunset is 4 minutes later at 6:47 PM on January 21.

Daylight saving time is not observed in Formosa during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:36 AM and sets 13 hours, 3 minutes later, at 6:39 PM, while on June 20, the shortest day of the year, it rises at 6:34 AM and sets 11 hours, 12 minutes later, at 5:47 PM.

Sunrise & Sunset with Twilight in January in Formosa

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 Formosa

Solar Elevation and Azimuth in January in FormosaJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMDecFeb0010102020203030404050505060607070808080000101020203030304040505060606070708080
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 Formosa

Moon Rise, Set & Phases in January in FormosaJan112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMDecFebDec 128:33 PMDec 128:33 PMDec 269:34 PMDec 269:34 PMJan 118:58 AMJan 118:58 AMJan 252:55 PMJan 252:55 PMFeb 98:00 PMFeb 98:00 PMFeb 249:31 AMFeb 249:31 AM4:53 AM4:53 AM6:29 PM6:29 PM6:38 PM6:38 PM5:55 AM5:55 AM5:39 AM5:39 AM7:17 PM7:17 PM7:01 PM7:01 PM6:31 AM6:31 AM5:29 AM5:29 AM6:48 PM6:48 PM6:20 PM6:20 PM6:06 AM6:06 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
76%-10:16 AMW10:55 PME4:18 AMN251,558 mi
2
67%-11:01 AMW11:27 PME4:58 AMN251,422 mi
3
58%-11:47 AMW-5:36 AMN250,470 mi
4
50%12:00 AME12:34 PMW-6:16 AMN248,692 mi
5
38%12:34 AME1:22 PMWSW-6:56 AMN246,147 mi
6
28%1:11 AMESE2:14 PMWSW-7:40 AMS242,970 mi
7
19%1:52 AMESE3:10 PMWSW-8:29 AMS239,366 mi
8
11%2:39 AMESE4:10 PMWSW-9:23 AMS235,610 mi
9
5%3:33 AMESE5:13 PMWSW-10:22 AMS232,025 mi
10
1%4:33 AMESE6:16 PMWSW-11:25 AMS228,945 mi
11
0%5:39 AMESE7:17 PMWSW-12:29 PMS226,664 mi
12
2%6:46 AMESE8:12 PMWSW-1:31 PMS225,376 mi
13
7%7:51 AMESE9:01 PMWSW-2:28 PMS225,140 mi
14
15%8:54 AMESE9:46 PMW-3:22 PMN225,884 mi
15
24%9:53 AME10:27 PMW-4:11 PMN227,436 mi
16
35%10:50 AME11:07 PMW-4:59 PMN229,571 mi
17
47%11:45 AME11:47 PMWNW-5:46 PMN232,057 mi
18
50%12:41 PMENE--6:34 PMN234,692 mi
19
69%-12:29 AMWNW1:38 PMENE7:25 PMN237,324 mi
20
79%-1:13 AMWNW2:35 PMENE8:18 PMN239,853 mi
21
87%-2:01 AMWNW3:34 PMENE9:13 PMN242,227 mi
22
93%-2:53 AMWNW4:31 PMENE10:09 PMN244,420 mi
23
97%-3:47 AMWNW5:25 PMENE11:05 PMN246,420 mi
24
100%-4:43 AMWNW6:16 PMENE11:58 PMN248,207 mi
25
100%-5:38 AMWNW7:01 PMENE--
26
100%-6:31 AMWNW7:42 PMENE12:47 AMN249,744 mi
27
98%-7:22 AMWNW8:19 PMENE1:33 AMN250,969 mi
28
95%-8:10 AMWNW8:54 PME2:15 AMN251,799 mi
29
89%-8:56 AMW9:27 PME2:55 AMN252,136 mi
30
83%-9:42 AMW9:59 PME3:34 AMN251,881 mi
31
75%-10:28 AMW10:32 PME4:12 AMN250,946 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 Formosa is essentially constant during January, remaining within 2% of 40% throughout.

For reference, on March 13, the muggiest day of the year, there are muggy conditions 44% of the time, while on July 19, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in January in Formosa

Humidity Comfort Levels in January in FormosaJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%DecFebJan 140%Jan 140%Jan 3138%Jan 3138%Jan 1141%Jan 1141%Jan 2140%Jan 2140%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 Formosa is essentially constant during January, remaining within 0.1 miles per hour of 5.7 miles per hour throughout.

For reference, on August 27, the windiest day of the year, the daily average wind speed is 7.9 miles per hour, while on March 11, the calmest day of the year, the daily average wind speed is 5.3 miles per hour.

Average Wind Speed in January in Formosa

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 Formosa throughout January is predominantly from the east, with a peak proportion of 46% on January 31.

Wind Direction in January in Formosa

Wind Direction in January in FormosaNEJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%DecFebwesteastnorthsouth
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 Formosa 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 Formosa

Time Spent in Various Temperature Bands and the Growing Season in January in FormosaJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%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 16comfortablewarmhotcool
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 Formosa are rapidly increasing during January, increasing by 716°F, from 4,007°F to 4,723°F, over the course of the month.

Growing Degree Days in January in Formosa

Growing Degree Days in January in FormosaJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031313,800°F3,800°F4,000°F4,000°F4,200°F4,200°F4,400°F4,400°F4,600°F4,600°F4,800°F4,800°F5,000°F5,000°FDecFebJan 14,007°FJan 14,007°FJan 314,723°FJan 314,723°FJan 114,244°FJan 114,244°FJan 214,486°FJan 214,486°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 Formosa is essentially constant during January, remaining within 0.1 kWh of 6.0 kWh throughout.

Average Daily Incident Shortwave Solar Energy in January in Formosa

Average Daily Incident Shortwave Solar Energy in January in FormosaJan11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhDecFebJan 15.9 kWhJan 15.9 kWhJan 316.1 kWhJan 316.1 kWhJan 115.9 kWhJan 115.9 kWhJan 216.0 kWhJan 216.0 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 Formosa are -15.537 deg latitude, -47.334 deg longitude, and 3,002 ft elevation.

The topography within 2 miles of Formosa contains significant variations in elevation, with a maximum elevation change of 548 feet and an average elevation above sea level of 3,017 feet. Within 10 miles contains significant variations in elevation (1,998 feet). Within 50 miles also contains large variations in elevation (2,802 feet).

The area within 2 miles of Formosa is covered by shrubs (47%), trees (27%), and grassland (21%), within 10 miles by shrubs (31%) and trees (30%), and within 50 miles by trees (32%) and shrubs (32%).

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

At a distance of 72 kilometers from Formosa, 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 Formosa 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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