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June Weather at Lan Yu Taiwan

Daily high temperatures increase by 2°F, from 81°F to 83°F, rarely falling below 77°F or exceeding 86°F.

Daily low temperatures increase by 2°F, from 75°F to 77°F, rarely falling below 71°F or exceeding 79°F.

For reference, on July 9, the hottest day of the year, temperatures at Lan Yu typically range from 77°F to 83°F, while on January 28, the coldest day of the year, they range from 63°F to 69°F.

Average High and Low Temperature in June at Lan Yu

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 June. 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 June at Lan Yu

Average Hourly Temperature in June at Lan YuJun11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMMayJulcomfortablewarmcomfortable
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.

Clémencia, Mauritius (5,209 miles away) and Nouméa, New Caledonia (4,308 miles) are the far-away foreign places with temperatures most similar to Lan Yu (view comparison).

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The month of June at Lan Yu experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 84% to 80%. The highest chance of overcast or mostly cloudy conditions is 86% on June 6.

The clearest day of the month is June 30, with clear, mostly clear, or partly cloudy conditions 20% of the time.

For reference, on June 6, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 86%, while on December 10, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 64%.

Cloud Cover Categories in June at Lan Yu

Cloud Cover Categories in June at Lan YuJun1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%MayJulDec 1064%Dec 1064%Jun 116%Jun 116%Jun 3020%Jun 3020%Jun 1115%Jun 1115%Jun 2118%Jun 2118%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. At Lan Yu, the chance of a wet day over the course of June is rapidly decreasing, starting the month at 56% and ending it at 49%.

For reference, the year's highest daily chance of a wet day is 63% on August 17, and its lowest chance is 11% on December 27.

Probability of Precipitation in June at Lan Yu

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 June at Lan Yu is gradually decreasing, starting the month at 8.7 inches, when it rarely exceeds 14.1 inches or falls below 3.5 inches, and ending the month at 8.3 inches, when it rarely exceeds 14.0 inches or falls below 2.1 inches.

Average Monthly Rainfall in June at Lan Yu

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 June at Lan Yu, the length of the day is essentially constant. The shortest day of the month is June 1, with 13 hours, 24 minutes of daylight and the longest day is June 21, with 13 hours, 29 minutes of daylight.

Hours of Daylight and Twilight in June at Lan Yu

Hours of Daylight and Twilight in June at Lan YuJun1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrMayJulJun 2113 hr, 29 minJun 2113 hr, 29 minnightnightdaydayJun 113 hr, 24 minJun 113 hr, 24 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 at Lan Yu is 5:09 AM on June 7 and the latest sunrise is 4 minutes later at 5:13 AM on June 30.

The earliest sunset is 6:33 PM on June 1 and the latest sunset is 8 minutes later at 6:41 PM on June 30.

Daylight saving time is not observed at Lan Yu during 2024.

For reference, on June 20, the longest day of the year, the Sun rises at 5:11 AM and sets 13 hours, 29 minutes later, at 6:39 PM, while on December 21, the shortest day of the year, it rises at 6:28 AM and sets 10 hours, 47 minutes later, at 5:15 PM.

Sunrise & Sunset with Twilight in June at Lan Yu

Sunrise & Sunset with Twilight in June at Lan YuJun11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM2 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMMayJul5:09 AM5:09 AMJun 76:36 PMJun 76:36 PM5:13 AM5:13 AMJun 306:41 PMJun 306:41 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of June. 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 June at Lan Yu

Solar Elevation and Azimuth in June at Lan YuJun11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMMayJul0010102020203030404050505060607070808080000101020203030304040505060606070708080
northeastsouthwest
Solar elevation and azimuth over the course of June 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 June 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 June at Lan Yu

Moon Rise, Set & Phases in June at Lan YuJun11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMMayJulMay 811:23 AMMay 811:23 AMMay 239:54 PMMay 239:54 PMJun 68:38 PMJun 68:38 PMJun 229:09 AMJun 229:09 AMJul 66:58 AMJul 66:58 AMJul 216:18 PMJul 216:18 PM5:01 AM5:01 AM6:39 PM6:39 PM6:21 PM6:21 PM5:18 AM5:18 AM4:27 AM4:27 AM6:33 PM6:33 PM6:10 PM6:10 PM4:55 AM4:55 AM5:07 AM5:07 AM7:15 PM7:15 PM6:49 PM6:49 PM5:52 AM5:52 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.
Jun 2024IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
36%1:01 AME1:17 PMW-7:09 AMS229,149 mi
2
25%1:38 AME2:17 PMW-7:56 AMS228,752 mi
3
15%2:15 AME3:19 PMWNW-8:45 AMS228,868 mi
4
8%2:54 AMENE4:22 PMWNW-9:36 AMS229,587 mi
5
3%3:38 AMENE5:27 PMWNW-10:30 AMN230,961 mi
6
0%4:27 AMENE6:33 PMWNW-11:28 AMN232,977 mi
7
1%5:22 AMENE7:36 PMWNW-12:28 PMN235,540 mi
8
3%6:20 AMENE8:33 PMWNW-1:27 PMN238,475 mi
9
9%7:21 AMENE9:24 PMWNW-2:24 PMN241,552 mi
10
16%8:20 AMENE10:08 PMWNW-3:16 PMN244,518 mi
11
24%9:17 AMENE10:46 PMWNW-4:04 PMS247,133 mi
12
33%10:11 AMENE11:20 PMWNW-4:47 PMS249,191 mi
13
42%11:02 AME11:51 PMW-5:28 PMS250,536 mi
14
50%11:51 AME--6:07 PMS251,074 mi
15
62%-12:21 AMW12:40 PME6:45 PMS250,775 mi
16
71%-12:50 AMW1:29 PME7:25 PMS249,675 mi
17
79%-1:20 AMW2:19 PMESE8:06 PMS247,870 mi
18
87%-1:53 AMWSW3:13 PMESE8:51 PMS245,512 mi
19
93%-2:30 AMWSW4:09 PMESE9:40 PMS242,793 mi
20
98%-3:11 AMWSW5:09 PMESE10:34 PMS239,931 mi
21
100%-4:00 AMWSW6:10 PMESE11:32 PMS237,148 mi
22
100%-4:55 AMWSW7:10 PMESE--
23
99%-5:56 AMWSW8:07 PMESE12:33 AMS234,646 mi
24
97%-7:01 AMWSW8:58 PMESE1:34 AMS232,581 mi
25
91%-8:07 AMWSW9:44 PMESE2:33 AMS231,040 mi
26
83%-9:11 AMWSW10:25 PMESE3:27 AMS230,038 mi
27
73%-10:12 AMW11:02 PME4:18 AMS229,544 mi
28
62%-11:12 AMW11:39 PME5:07 AMS229,495 mi
29
50%-12:12 PMW-5:54 AMS229,828 mi
30
38%12:15 AME1:11 PMWNW-6:41 AMS230,498 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 at Lan Yu is essentially constant during June, remaining around 100% throughout.

For reference, on June 13, the muggiest day of the year, there are muggy conditions 100% of the time, while on January 24, the least muggy day of the year, there are muggy conditions 37% of the time.

Humidity Comfort Levels in June at Lan Yu

Humidity Comfort Levels in June at Lan YuJun1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%MayJulJun 1100%Jun 1100%Jun 30100%Jun 30100%Jun 11100%Jun 11100%Jun 21100%Jun 21100%miserablemiserableoppressiveoppressivemuggymuggy
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 at Lan Yu is essentially constant during June, remaining within 0.1 miles per hour of 13.7 miles per hour throughout.

For reference, on December 1, the windiest day of the year, the daily average wind speed is 21.0 miles per hour, while on May 10, the calmest day of the year, the daily average wind speed is 12.8 miles per hour.

The highest daily average wind speed during June is 13.9 miles per hour on June 10.

Average Wind Speed in June at Lan Yu

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 at Lan Yu throughout June is predominantly from the south, with a peak proportion of 48% on June 25.

Wind Direction in June at Lan Yu

Wind Direction in June at Lan YuESWJun1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%20%80%40%60%60%40%80%20%100%0%MayJulwestsoutheastnorth
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).

Lan Yu 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 at Lan Yu is essentially constant during June, remaining within 1°F of 84°F throughout.

Average Water Temperature in June at Lan Yu

Average Water Temperature in June at Lan YuJun11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303078°F78°F79°F79°F80°F80°F81°F81°F82°F82°F83°F83°F84°F84°F85°F85°F86°F86°F87°F87°FMayJulJun 183°FJun 183°FJun 3084°FJun 3084°FJun 1183°FJun 1183°FJun 2184°FJun 2184°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 at Lan Yu 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 June at Lan Yu

Time Spent in Various Temperature Bands and the Growing Season in June at Lan YuJun1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%MayJul100%Jun 16100%Jun 16100%Jul 2100%Jul 2comfortablewarmhot
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 at Lan Yu are rapidly increasing during June, increasing by 833°F, from 3,094°F to 3,928°F, over the course of the month.

Growing Degree Days in June at Lan Yu

The average growing degree days accumulated over the course of June, 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 at Lan Yu is essentially constant during June, remaining within 0.1 kWh of 5.1 kWh throughout.

Average Daily Incident Shortwave Solar Energy in June at Lan Yu

Average Daily Incident Shortwave Solar Energy in June at Lan YuJun1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWhMayJulJun 15.2 kWhJun 15.2 kWhJun 305.1 kWhJun 305.1 kWhJun 115.1 kWhJun 115.1 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 Lan Yu are 22.029 deg latitude, 121.534 deg longitude, and 39 ft elevation.

The topography within 2 miles of Lan Yu contains very significant variations in elevation, with a maximum elevation change of 1,722 feet and an average elevation above sea level of 303 feet. Within 10 miles also contains very significant variations in elevation (1,722 feet). Within 50 miles contains very significant variations in elevation (2,986 feet).

The area within 2 miles of Lan Yu is covered by water (95%), within 10 miles by water (100%), and within 50 miles by water (99%).

This report illustrates the typical weather at Lan Yu, 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

Lan Yu has a weather station that reported reliably enough during the analysis period that we have included it in our network. When available, historical temperature and dew point measurements are taken directly from this weather station. These records are obtained from NOAA's Integrated Surface Hourly data set, falling back on ICAO METAR records as required.

In the case of missing or erroneous measurements from this station, we fall back on records from nearby stations, adjusted according to typical seasonal and diurnal intra-station differences. For a given day of the year and hour of the day, the fallback station is selected to minimize the prediction error over the years for which there are measurements for both stations.

The stations on which we may fall back are Hengchun Airport, Chihhang Tw-Afb, Pingtung North Air Force Base, Pingtung South Air Force Base, Kaohsiung International Airport, Kangshan Tw-Afb, Tainan Airport, and Chiayi Airport.

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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