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Average Weather in December in Nadi Fiji

In Nadi, the month of December is characterized by essentially constant daily high temperatures, with daily highs around 87°F throughout the month, rarely exceeding 90°F or dropping below 85°F.

Daily low temperatures are around 74°F, rarely falling below 70°F or exceeding 77°F.

For reference, on February 28, the hottest day of the year, temperatures in Nadi typically range from 75°F to 88°F, while on July 21, the coldest day of the year, they range from 67°F to 82°F.

Average High and Low Temperature in December

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 December. 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 December

Average Hourly Temperature in December in Nadi18152229112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM4 AM8 AM12 PM4 PM8 PM12 AMNovJancomfortablehotwarm
The average hourly temperature, color coded into bands: frigid < 15°F < freezing < 32°F < chilly < 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.

Clouds

The month of December in Nadi experiences gradually increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 69% to 76%.

The clearest day of the month is December 3, with clear, mostly clear, or partly cloudy conditions 32% of the time.

For reference, on March 6, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 81%, while on August 20, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 64%.

Cloud Cover Categories in December

Cloud Cover Categories in December in Nadi1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%NovJanDec 131%Dec 131%Dec 3124%Dec 3124%Dec 1129%Dec 1129%Dec 2126%Dec 2126%clearpartly cloudyovercastmostly clearmostly cloudy
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. In Nadi, the chance of a wet day over the course of December is rapidly increasing, starting the month at 38% and ending it at 45%.

For reference, the year's highest daily chance of a wet day is 55% on March 2, and its lowest chance is 12% on July 7.

Probability of Precipitation in December

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 December in Nadi is rapidly increasing, starting the month at 5.2 inches, when it rarely exceeds 9.1 inches or falls below 1.1 inches, and ending the month at 7.0 inches, when it rarely exceeds 12.5 inches or falls below 2.3 inches.

Average Monthly Rainfall in December

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

Over the course of December in Nadi, the length of the day is essentially constant. The shortest day of the month is December 1, with 13 hours, 7 minutes of daylight and the longest day is December 21, with 13 hours, 12 minutes of daylight.

Hours of Daylight and Twilight in December

Hours of Daylight and Twilight in December in Nadi1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrNovJanDec 2213 hr, 12 minDec 2213 hr, 12 mindaydaydaydaynightDec 113 hr, 7 minDec 113 hr, 7 min
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 Nadi is 6:25 AM on December 1 and the latest sunrise is 12 minutes later at 6:37 AM on December 31.

The earliest sunset is 7:32 PM on December 1 and the latest sunset is 16 minutes later at 7:48 PM on December 31.

Daylight saving time is observed in Nadi during 2017, but it neither starts nor ends during December, so the entire month is in daylight saving time.

For reference, on December 21, the longest day of the year, the Sun rises at 6:32 AM and sets 13 hours, 12 minutes later, at 7:44 PM, while on June 21, the shortest day of the year, it rises at 6:40 AM and sets 11 hours, 4 minutes later, at 5:43 PM.

Sunrise & Sunset with Twilight and Daylight Saving Time in December

The solar day over the course of December. 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.

The chance that a given day will be muggy in Nadi is gradually increasing during December, rising from 94% to 98% over the course of the month.

For reference, on February 23, the muggiest day of the year, there are muggy conditions 100% of the time, while on July 22, the least muggy day of the year, there are muggy conditions 51% of the time.

Humidity Comfort Levels in December

Humidity Comfort Levels in December in Nadi1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%10%20%30%40%50%60%70%80%90%100%NovJanDec 194%Dec 194%Dec 3198%Dec 3198%Dec 1196%Dec 1196%Dec 2197%Dec 2197%humidhumidmuggymuggymiserablemiserableoppressiveoppressive
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 Nadi is essentially constant during December, remaining within 0.1 miles per hour of 6.1 miles per hour throughout.

For reference, on August 5, the windiest day of the year, the daily average wind speed is 7.1 miles per hour, while on February 18, the calmest day of the year, the daily average wind speed is 5.6 miles per hour.

Average Wind Speed in December

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 Nadi throughout December is predominantly from the east, with a peak proportion of 63% on December 17.

Wind Direction in December

Wind Direction in December in Nadi1815222911223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%NovJaneastnorthsouthwest
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

Nadi 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 Nadi is essentially constant during December, remaining within 1°F of 82°F throughout.

Average Water Temperature in December

The daily average water temperature (purple line), 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 in Nadi is essentially constant during December, remaining within 0.1 kWh of 6.5 kWh throughout.

Average Daily Incident Shortwave Solar Energy in December

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 Nadi are -17.803 deg latitude, 177.416 deg longitude, and 33 ft elevation.

The topography within 2 miles of Nadi contains only modest variations in elevation, with a maximum elevation change of 148 feet and an average elevation above sea level of 35 feet. Within 10 miles contains only modest variations in elevation (2,270 feet). Within 50 miles contains large variations in elevation (4,301 feet).

The area within 2 miles of Nadi is covered by cropland (43%), mangroves (32%), and trees (12%), within 10 miles by water (33%) and cropland (29%), and within 50 miles by water (69%) and trees (18%).

Data Sources

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

At a distance of 6 kilometers from Nadi, 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 Nadi 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 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.