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April Weather at Monterey Regional Airport California, United States

Daily high temperatures are around 62°F, rarely falling below 55°F or exceeding 71°F.

Daily low temperatures increase by 2°F, from 47°F to 49°F, rarely falling below 42°F or exceeding 53°F.

For reference, on September 12, the hottest day of the year, temperatures at Monterey Regional Airport typically range from 55°F to 69°F, while on January 2, the coldest day of the year, they range from 43°F to 59°F.

Average High and Low Temperature in April at Monterey Regional Airport

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 April. 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 April at Monterey Regional Airport

Average Hourly Temperature in April at Monterey Regional AirportApr11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMMarMaycoldcoldcool
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.

Valparaíso, Chile (5,805 miles away) is the far-away foreign place with temperatures most similar to Monterey Regional Airport (view comparison).

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© Esri, et al.

Compare Monterey Regional Airport to another city:

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The month of April at Monterey Regional Airport experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 43% to 37%.

The clearest day of the month is April 28, with clear, mostly clear, or partly cloudy conditions 63% of the time.

For reference, on February 16, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 51%, while on August 7, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 92%.

Cloud Cover Categories in April at Monterey Regional Airport

Cloud Cover Categories in April at Monterey Regional AirportApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%MarMayApr 157%Apr 157%Apr 3063%Apr 3063%Apr 1159%Apr 1159%Apr 2160%Apr 2160%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 Monterey Regional Airport, the chance of a wet day over the course of April is very rapidly decreasing, starting the month at 18% and ending it at 9%.

For reference, the year's highest daily chance of a wet day is 30% on February 21, and its lowest chance is 0% on July 22.

Probability of Precipitation in April at Monterey Regional Airport

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 April at Monterey Regional Airport is rapidly decreasing, starting the month at 1.9 inches, when it rarely exceeds 4.8 inches or falls below 0.2 inches, and ending the month at 0.7 inches, when it rarely exceeds 2.0 inches.

Average Monthly Rainfall in April at Monterey Regional Airport

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 April at Monterey Regional Airport, the length of the day is rapidly increasing. From the start to the end of the month, the length of the day increases by 1 hour, 4 minutes, implying an average daily increase of 2 minutes, 12 seconds, and weekly increase of 15 minutes, 21 seconds.

The shortest day of the month is April 1, with 12 hours, 37 minutes of daylight and the longest day is April 30, with 13 hours, 40 minutes of daylight.

Hours of Daylight and Twilight in April at Monterey Regional Airport

Hours of Daylight and Twilight in April at Monterey Regional AirportApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 hr24 hr4 hr20 hr8 hr16 hr12 hr12 hr16 hr8 hr20 hr4 hr24 hr0 hrMarMaynightnightdaydayApr 112 hr, 37 minApr 112 hr, 37 minApr 3013 hr, 40 minApr 3013 hr, 40 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 latest sunrise of the month at Monterey Regional Airport is 6:53 AM on April 1 and the earliest sunrise is 38 minutes earlier at 6:14 AM on April 30.

The earliest sunset is 7:29 PM on April 1 and the latest sunset is 25 minutes later at 7:54 PM on April 30.

Daylight saving time is observed at Monterey Regional Airport during 2022, but it neither starts nor ends during April, so the entire month is in daylight saving time.

For reference, on June 21, the longest day of the year, the Sun rises at 5:49 AM and sets 14 hours, 40 minutes later, at 8:29 PM, while on December 21, the shortest day of the year, it rises at 7:15 AM and sets 9 hours, 40 minutes later, at 4:55 PM.

Sunrise & Sunset with Twilight and Daylight Saving Time in April at Monterey Regional Airport

Sunrise & Sunset with Twilight and Daylight Saving Time in April at Monterey Regional AirportApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930302 AM4 AM6 AM8 AM10 AM12 PM2 PM4 PM6 PM8 PM10 PM12 AMMarMay6:14 AM6:14 AMApr 307:54 PMApr 307:54 PM6:53 AM6:53 AMApr 17:29 PMApr 17:29 PM6:32 AM6:32 AMApr 167:42 PMApr 167:42 PMSolarMidnightSolarMidnightSolarNoonSunriseSunset
The solar day over the course of April. 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 April at Monterey Regional Airport

Solar Elevation and Azimuth in April at Monterey Regional AirportApr11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 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 AMMarMay001010202020303040405050600001010202030303040405050606070
northeastsouthwest
Solar elevation and azimuth over the course of April 2022. 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 April 2022. 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 April at Monterey Regional Airport

Moon Rise, Set & Phases in April at Monterey Regional AirportApr11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303012 AM12 AM4 AM4 AM8 AM8 AM12 PM12 PM4 PM4 PM8 PM8 PM12 AM12 AMMarMayMar 29:35 AMMar 29:35 AMMar 1812:18 AMMar 1812:18 AMMar 3111:25 PMMar 3111:25 PMApr 1611:56 AMApr 1611:56 AMApr 301:29 PMApr 301:29 PMMay 159:15 PMMay 159:15 PMMay 304:31 AMMay 304:31 AM6:58 AM6:58 AM6:15 PM6:15 PM6:53 PM6:53 PM7:44 AM7:44 AM6:55 AM6:55 AM7:10 PM7:10 PM6:47 PM6:47 PM6:39 AM6:39 AM6:15 AM6:15 AM8:04 PM8:04 PM8:00 PM8:00 PM6:18 AM6:18 AM5:51 AM5:51 AM8:57 PM8:57 PM
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.
Apr 2022IlluminationMoonriseMoonsetMoonriseMeridian PassingDistance
1
0%7:20 AME8:12 PMW-1:44 PMS241,430 mi
2
3%7:46 AMENE9:14 PMWNW-2:28 PMS243,943 mi
3
7%8:14 AMENE10:16 PMWNW-3:12 PMS246,351 mi
4
13%8:44 AMENE11:17 PMWNW-3:57 PMS248,464 mi
5
21%9:17 AMENE--4:44 PMS250,094 mi
6
29%-12:17 AMWNW9:56 AMENE5:33 PMS251,075 mi
7
39%-1:15 AMWNW10:40 AMNE6:24 PMS251,280 mi
8
50%-2:08 AMNW11:31 AMNE7:14 PMS250,641 mi
9
58%-2:56 AMWNW12:26 PMENE8:04 PMS249,160 mi
10
68%-3:38 AMWNW1:26 PMENE8:53 PMS246,913 mi
11
77%-4:15 AMWNW2:28 PMENE9:41 PMS244,047 mi
12
85%-4:47 AMWNW3:31 PMENE10:27 PMS240,772 mi
13
92%-5:16 AMWNW4:35 PMENE11:12 PMS237,348 mi
14
97%-5:44 AMW5:40 PME11:58 PMS234,055 mi
15
99%-6:11 AMW6:47 PME--
16
100%-6:39 AMW7:57 PMESE12:44 AMS231,171 mi
17
100%-7:10 AMWSW9:09 PMESE1:34 AMS228,929 mi
18
97%-7:45 AMWSW10:24 PMESE2:27 AMS227,487 mi
19
91%-8:26 AMWSW11:38 PMESE3:25 AMS226,905 mi
20
82%-9:16 AMWSW-4:27 AMS227,144 mi
21
72%12:48 AMSE10:15 AMSW-5:32 AMS228,087 mi
22
61%1:50 AMSE11:21 AMWSW-6:36 AMS229,564 mi
23
50%2:42 AMESE12:32 PMWSW-7:37 AMS231,401 mi
24
37%3:25 AMESE1:42 PMWSW-8:33 AMS233,447 mi
25
27%4:01 AMESE2:50 PMWSW-9:25 AMS235,598 mi
26
17%4:31 AMESE3:56 PMW-10:13 AMS237,790 mi
27
10%4:58 AME4:59 PMW-10:57 AMS239,988 mi
28
5%5:24 AME6:01 PMW-11:40 AMS242,171 mi
29
1%5:49 AME7:03 PMWNW-12:23 PMS244,311 mi
30
0%6:15 AMENE8:04 PMWNW-1:06 PMS246,359 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 Monterey Regional Airport is essentially constant during April, remaining around 0% throughout.

For reference, on September 16, the muggiest day of the year, there are muggy conditions 0% of the time, while on January 17, the least muggy day of the year, there are muggy conditions 0% of the time.

Humidity Comfort Levels in April at Monterey Regional Airport

Humidity Comfort Levels in April at Monterey Regional AirportApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%0%10%10%20%20%30%30%40%40%50%50%60%60%70%70%80%80%90%90%100%100%MarMayApr 160%Apr 160%Apr 10%Apr 10%Apr 300%Apr 300%drydrycomfortablecomfortable
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 Monterey Regional Airport is essentially constant during April, remaining around 8.0 miles per hour throughout.

For reference, on April 17, the windiest day of the year, the daily average wind speed is 8.1 miles per hour, while on September 16, the calmest day of the year, the daily average wind speed is 6.2 miles per hour.

The highest daily average wind speed during April is 8.1 miles per hour on April 17.

Average Wind Speed in April at Monterey Regional Airport

Average Wind Speed in April at Monterey Regional AirportApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 mph0 mph2 mph2 mph4 mph4 mph6 mph6 mph8 mph8 mph10 mph10 mph12 mph12 mphMarMayApr 178.1 mphApr 178.1 mphApr 18.1 mphApr 18.1 mphApr 308.0 mphApr 308.0 mph
The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands.

The wind direction at Monterey Regional Airport during April is predominantly out of the north from April 1 to April 6 and the west from April 6 to April 30.

Wind Direction in April at Monterey Regional Airport

Wind Direction in April at Monterey Regional AirportNWApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%20%80%40%60%60%40%80%20%100%0%MarMaywestsouthnortheast
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).

Monterey Regional Airport 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 Monterey Regional Airport is essentially constant during April, remaining around 54°F throughout.

Average Water Temperature in April at Monterey Regional Airport

Average Water Temperature in April at Monterey Regional AirportApr11223344556677889910101111121213131414151516161717181819192020212122222323242425252626272728282929303051°F51°F52°F52°F53°F53°F54°F54°F55°F55°F56°F56°F57°F57°F58°F58°FMarMayApr 154°FApr 154°FApr 3054°FApr 3054°FApr 1154°FApr 1154°FApr 2154°FApr 2154°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 Monterey Regional Airport 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 April at Monterey Regional Airport

Time Spent in Various Temperature Bands and the Growing Season in April at Monterey Regional Airportgrowing seasonApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300%100%10%90%20%80%30%70%40%60%50%50%60%40%70%30%80%20%90%10%100%0%MarMay100%Apr 16100%Apr 16coldcoolvery coldcomfortable
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 Monterey Regional Airport are gradually increasing during April, increasing by 151°F, from 345°F to 496°F, over the course of the month.

Growing Degree Days in April at Monterey Regional Airport

Growing Degree Days in April at Monterey Regional AirportApr112233445566778899101011111212131314141515161617171818191920202121222223232424252526262727282829293030250°F250°F300°F300°F350°F350°F400°F400°F450°F450°F500°F500°F550°F550°F600°F600°F650°F650°FMarMayApr 1345°FApr 1345°FApr 30496°FApr 30496°FApr 11393°FApr 11393°FApr 21446°FApr 21446°F
The average growing degree days accumulated over the course of April, 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 Monterey Regional Airport is increasing during April, rising by 1.2 kWh, from 5.8 kWh to 7.0 kWh, over the course of the month.

Average Daily Incident Shortwave Solar Energy in April at Monterey Regional Airport

Average Daily Incident Shortwave Solar Energy in April at Monterey Regional AirportApr1122334455667788991010111112121313141415151616171718181919202021212222232324242525262627272828292930300 kWh0 kWh1 kWh1 kWh2 kWh2 kWh3 kWh3 kWh4 kWh4 kWh5 kWh5 kWh6 kWh6 kWh7 kWh7 kWh8 kWh8 kWh9 kWh9 kWhMarMayApr 15.8 kWhApr 15.8 kWhApr 307.0 kWhApr 307.0 kWhApr 166.4 kWhApr 166.4 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 Monterey Regional Airport are 36.588 deg latitude, -121.839 deg longitude, and 220 ft elevation.

The topography within 2 miles of Monterey Regional Airport contains very significant variations in elevation, with a maximum elevation change of 896 feet and an average elevation above sea level of 260 feet. Within 10 miles contains very significant variations in elevation (3,045 feet). Within 50 miles contains large variations in elevation (5,850 feet).

The area within 2 miles of Monterey Regional Airport is covered by artificial surfaces (55%), shrubs (20%), and cropland (13%), within 10 miles by water (31%) and shrubs (18%), and within 50 miles by water (46%) and grassland (18%).

This report illustrates the typical weather at Monterey Regional Airport, 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

Monterey Regional Airport 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 include but are not limited to Salinas Municipal Airport, Watsonville Municipal Airport, Hollister Municipal Airport, Norman Y. Mineta San José International Airport, Moffett Federal Airfield, Point Piedras Blanca, Hayward Air Terminal Airport, and Livermore Municipal 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 © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC.

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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