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October Weather in Tonga Tonga

Daily high temperatures increase by 2°F, from 78°F to 80°F, rarely falling below 74°F or exceeding 83°F.

Daily low temperatures increase by 2°F, from 68°F to 70°F, rarely falling below 62°F or exceeding 74°F.

For reference, on February 15, the hottest day of the year, temperatures in Tonga typically range from 75°F to 85°F, while on August 22, the coldest day of the year, they range from 66°F to 76°F.

Average High and Low Temperature in October in Tonga

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 October. 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 October in Tonga

Average Hourly Temperature in October in TongaOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMSepNovcomfortablewarm
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.
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The month of October in Tonga experiences rapidly increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 44% to 56%.

The clearest day of the month is October 1, with clear, mostly clear, or partly cloudy conditions 56% of the time.

For reference, on February 29, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 70%, while on August 8, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 63%.

Cloud Cover Categories in October in Tonga

Cloud Cover Categories in October in TongaOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SepNovOct 156%Oct 156%Oct 3144%Oct 3144%Oct 1154%Oct 1154%Oct 2148%Oct 2148%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 Tonga, the chance of a wet day over the course of October is decreasing, starting the month at 23% and ending it at 19%.

For reference, the year's highest daily chance of a wet day is 42% on April 2, and its lowest chance is 15% on June 29.

Probability of Precipitation in October in Tonga

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 October in Tonga is essentially constant, remaining about 2.4 inches throughout, and rarely exceeding 5.0 inches or falling below 0.2 inches.

The lowest average 31-day accumulation is 2.2 inches on October 24.

Average Monthly Rainfall in October in Tonga

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 October in Tonga, the length of the day is increasing. From the start to the end of the month, the length of the day increases by 33 minutes, implying an average daily increase of 1 minute, 6 seconds, and weekly increase of 7 minutes, 41 seconds.

The shortest day of the month is October 1, with 12 hours, 18 minutes of daylight and the longest day is October 31, with 12 hours, 51 minutes of daylight.

Hours of Daylight and Twilight in October in Tonga

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 latest sunrise of the month in Tonga is 6:20 AM on October 1 and the earliest sunrise is 22 minutes earlier at 5:58 AM on October 31.

The earliest sunset is 6:38 PM on October 1 and the latest sunset is 11 minutes later at 6:49 PM on October 31.

Daylight saving time is not observed in Tonga during 2024.

For reference, on December 21, the longest day of the year, the Sun rises at 5:58 AM and sets 13 hours, 21 minutes later, at 7:18 PM, while on June 20, the shortest day of the year, it rises at 7:14 AM and sets 10 hours, 55 minutes later, at 6:09 PM.

Sunrise & Sunset with Twilight in October in Tonga

The solar day over the course of October. 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 October in Tonga

Solar Elevation and Azimuth in October in TongaOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 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 AMSepNov
northeastsouthwest
Solar elevation and azimuth over the course of October 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 October 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 October in Tonga

Moon Rise, Set & Phases in October in TongaOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313112 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMSepNovSep 32:56 PMSep 32:56 PMSep 183:35 PMSep 183:35 PMOct 37:50 AMOct 37:50 AMOct 1812:27 AMOct 1812:27 AMNov 21:48 AMNov 21:48 AMNov 1610:29 AMNov 1610:29 AM6:46 AM6:46 AM6:36 PM6:36 PM6:39 PM6:39 PM7:04 AM7:04 AM6:20 AM6:20 AM6:56 PM6:56 PM6:23 PM6:23 PM6:16 AM6:16 AM5:59 AM5:59 AM7:23 PM7:23 PM6:11 PM6:11 PM5:36 AM5:36 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.
Oct 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
3%5:20 AME5:21 PMW-11:20 AMN251,865 mi
2
1%5:50 AME6:08 PMW-11:58 AMN252,446 mi
3
0%6:20 AME6:56 PMW-12:37 PMN252,592 mi
4
1%6:51 AME7:44 PMWSW-1:16 PMN252,307 mi
5
5%7:23 AMESE8:35 PMWSW-1:57 PMN251,577 mi
6
10%7:58 AMESE9:27 PMWSW-2:41 PMS250,370 mi
7
16%8:38 AMESE10:22 PMWSW-3:28 PMS248,648 mi
8
24%9:22 AMESE11:18 PMWSW-4:19 PMS246,385 mi
9
34%10:12 AMESE--5:13 PMS243,584 mi
10
44%-12:15 AMWSW11:08 AMESE6:10 PMS240,301 mi
11
50%-1:10 AMWSW12:08 PMESE7:07 PMS236,660 mi
12
66%-2:02 AMWSW1:10 PMESE8:02 PMS232,866 mi
13
77%-2:49 AMWSW2:13 PMESE8:55 PMN229,193 mi
14
86%-3:33 AMWSW3:15 PMESE9:47 PMN225,968 mi
15
94%-4:15 AMW4:17 PME10:37 PMN223,526 mi
16
98%-4:54 AMW5:20 PME11:28 PMN222,158 mi
17
100%-5:34 AMW6:23 PME--
18
100%-6:16 AMWNW7:28 PMENE12:20 AMN222,053 mi
19
98%-7:01 AMWNW8:36 PMENE1:14 AMN223,253 mi
20
94%-7:51 AMWNW9:43 PMENE2:13 AMN225,641 mi
21
86%-8:46 AMWNW10:49 PMENE3:14 AMN228,955 mi
22
77%-9:45 AMWNW11:51 PMENE4:17 AMN232,842 mi
23
67%-10:46 AMWNW-5:18 AMN236,923 mi
24
50%12:45 AMENE11:46 AMWNW-6:16 AMN240,857 mi
25
46%1:32 AMENE12:43 PMWNW-7:08 AMN244,381 mi
26
36%2:13 AMENE1:37 PMWNW-7:56 AMN247,322 mi
27
27%2:49 AMENE2:29 PMWNW-8:39 AMN249,591 mi
28
18%3:22 AME3:17 PMW-9:19 AMN251,165 mi
29
12%3:53 AME4:05 PMW-9:58 AMN252,073 mi
30
6%4:23 AME4:52 PMW-10:36 AMN252,377 mi
31
2%4:53 AME5:41 PMWSW-11:15 AMN252,153 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 Tonga is rapidly increasing during October, rising from 50% to 69% over the course of the month.

For reference, on February 13, the muggiest day of the year, there are muggy conditions 100% of the time, while on August 23, the least muggy day of the year, there are muggy conditions 35% of the time.

Humidity Comfort Levels in October in Tonga

Humidity Comfort Levels in October in TongaOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%SepNovOct 150%Oct 150%Oct 3169%Oct 3169%Oct 1155%Oct 1155%Oct 2161%Oct 2161%oppressiveoppressivemuggymuggyhumidhumidcomfortablecomfortablemiserablemiserabledrydry
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 Tonga is essentially constant during October, remaining within 0.2 miles per hour of 14.2 miles per hour throughout.

For reference, on April 26, the windiest day of the year, the daily average wind speed is 15.4 miles per hour, while on February 17, the calmest day of the year, the daily average wind speed is 13.5 miles per hour.

Average Wind Speed in October in Tonga

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 Tonga throughout October is predominantly from the east, with a peak proportion of 68% on October 24.

Wind Direction in October in Tonga

Wind Direction in October in TongaOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%20%80%40%60%60%40%80%20%100%0%SepNovsoutheastnorthwest
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).

Tonga 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 Tonga is essentially constant during October, remaining within 1°F of 76°F throughout.

Average Water Temperature in October in Tonga

Average Water Temperature in October in TongaOct112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030313172°F72°F73°F73°F74°F74°F75°F75°F76°F76°F77°F77°F78°F78°F79°F79°F80°F80°F81°F81°FSepNovOct 175°FOct 175°FOct 3176°FOct 3176°FOct 1175°FOct 1175°FOct 2176°FOct 2176°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 Tonga 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 October in Tonga

Time Spent in Various Temperature Bands and the Growing Season in October in TongaOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%SepNov100%Oct 16100%Oct 16comfortablewarmcool
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 Tonga are rapidly increasing during October, increasing by 689°F, from 1,912°F to 2,601°F, over the course of the month.

Growing Degree Days in October in Tonga

The average growing degree days accumulated over the course of October, 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 Tonga is essentially constant during October, remaining within 0.2 kWh of 6.1 kWh throughout.

Average Daily Incident Shortwave Solar Energy in October in Tonga

Average Daily Incident Shortwave Solar Energy in October in TongaOct11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303031310 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhSepNovOct 15.9 kWhOct 15.9 kWhOct 316.4 kWhOct 316.4 kWhOct 116.2 kWhOct 116.2 kWhOct 216.3 kWhOct 216.3 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 Tonga are -20.000 deg latitude, -175.000 deg longitude, and 0 ft elevation.

The topography within 2 miles of Tonga is essentially flat, with a maximum elevation change of 0 feet and an average elevation above sea level of 0 feet. Within 10 miles is also essentially flat (0 feet). Within 50 miles is also essentially flat (0 feet).

The area within 2 miles of Tonga is covered by water (100%), within 10 miles by water (100%), and within 50 miles by water (100%).

This report illustrates the typical weather in Tonga, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.

The details of the data sources used for this report can be found on the Fuaʻamotu International Airport page.

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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