Climate and monthly weather forecastEwa Beach, HI
Climate and monthly weather forecast
The climate of Ewa Beach
Ewa Beach, Hawaii, USA falls under the Köppen climate classification of As, recognized as a Tropical wet and dry or savanna type of climate. Geographically, it is situated around the same latitude as the Tropic of Cancer. This locale is nestled in a subtropical belt, well-known for its tropical climate.Throughout the year, Ewa Beach enjoys a warm tropical climate. Variability in weather conditions can be seen with the different weather parameters. High temperatures range from 75.9°F (24.4°C) to 81.5°F (27.5°C), while lows hover between 70.5°F (21.4°C) and 76.3°F (24.6°C), signifying minimal deviation. Relative humidity stands consistently from 74 to 76%. Sea temperatures are also warm, oscillating from 75.7°F (24.3°C) to 80.6°F (27°C).
Ewa Beach experiences rainfall year-round with an emphasis on heavier rain from February to March. The highest recorded rainfall is 1.77" (45mm) in March, while July sees the driest conditions with merely 0.43" (11mm). Daylight hours span from 10.9 to 13.4 hours with January having the shortest days and June enjoys the longest ones. Sunshine hours range from a minimum of 6.7 hours in November to a maximum of 11 hours in June.
Interestingly, Ewa Beach exhibits distinct weather patterns. A clear illustration is cloud cover, which moves from 30 to 37% through the year. Simultaneously, wind speeds also show fluctuations- reaching up to 11.9mph (19.2km/h) in July and clocking at 9.1mph (14.6km/h) in January.
The best time to visit Ewa Beach
The best time to visit Ewa Beach can be considered from June to July. With an average temperature peaking at 81.5°F (27.5°C) in August, the pleasant weather provides suitable conditions for outdoor oceanic and beach activities. Moreover, sea temperatures hit an agreeable high of 80.6°F (27°C), ideal for water activities including swimming, snorkeling, and surfing. Furthermore, both June and July record the maximum sunshine duration of 13.4 hours making it the perfect time for vacationers to relish the Hawaiian beach ambiance.The worst time to visit Ewa Beach
However, February and March represent the least favorable period for a visit. This time witnesses peak rainfall measurements of 1.77" (45mm), creating damp conditions. Furthermore, these months bring a high number of rainfall days, reaching up to 18.1 days in March. These criteria combined with the reduced sunshine hours compared to the summer months, mark this period as the least alluring to visitors.Spring weather in Ewa Beach
Spring unfolds in Ewa Beach from March to May, with temperatures shifting from 75.2°F (24°C) to 78.6°F (25.9°C). This period experiences a significant increase in rainfall from 1.77" (45mm) to 1.14" (29mm). Sunlight durations embark on an upward trend, going from 12 hours to 13.2 hours per day. This amalgamation of moderately warm temperatures, increased rainfall, and elongating daylight frames the quintessential springtime experience.Summer weather in Ewa Beach
Summer stretches from June to August, with temperature highs soaring from 79.7°F (26.5°C) to 81.5°F (27.5°C) and lows varying from 74.8°F (23.8°C) to 76.3°F (24.6°C). Rainfall hits the lowest level at 0.43" (11mm), making it the driest season. Furthermore, sunshine extends up to a maximum of 13.4 hours a day, catering to long island beach days.Autumn weather in Ewa Beach
Autumn in Ewa Beach runs from September through November, with temperature highs wavering from 81.5°F (27.5°C) to 78.8°F (26°C), and lows alternately between 76.3°F (24.6°C) and 74.5°F (23.6°C). Rainfall increases steadily, reaching up to 1.42" (36mm) in November, indicating the beginning of the wetter season. Daylight hours gradually decrease, standing at 11.1 hours per day by November.Winter weather in Ewa Beach
Winter envelopes Ewa Beach from December to February, characterized by high temperatures dropping to 75.9°F (24.4°C) and lows down to 70.5°F (21.4°C), marking the coolest time of the year. Rainfall climbs to a year-high of 1.42" (36mm) in February, signifying the wettest season. The shorter days with 10.9 hours of daylight in December make for shorter beach visits and activities.Weather in January
Donning the crown for the month with the highest relative humidity on average, January in Ewa Beach brings a moist charm. The consistent light of approximately 11 hours a day sets the stage for frequent nighttime relaxation. The balmy trade winds dance throughout the town, maintaining a soothing flow of air. Weather in January »Weather in February
As the calendar turns to February, Ewa Beach experiences subtle changes in the weather. The generally unchanged temperature gives way to the anticipation of a slightly wetter season. With increased average monthly rainfall and prevalent humidity, indoor activities become more favorable. Weather in February »Weather in March
March claims the title for the peak month for rainfall in Ewa Beach, with an average of 1.77" (45mm). However, the variation in temperature is barely perceptible, underpinning the region's typical tropical climate. Still, the residents find respite in the slowly expanding daily duration of sunlight. Weather in March »Weather in April
By April, Ewa Beach sees the beginning of a pattern of declining rainfall. A notable characteristic of April is the increased daylight, which amplifies outdoor activities and beach visits. As the ocean begins to warm up, it beckons to the community for refreshing dips. Weather in April »Weather in May
May brings a significant shift in Ewa Beach, with the longest hours of sunshine peaking at 10.5 hours per day. Consequently, it becomes a prime month for beach sports and soaking up the Hawaiian sun. The rainfall continues to recede, and the winds moderate, further harmonizing the climatic conditions. Weather in May »Weather in June
June marks the formal arrival of summer in Ewa Beach, accentuated by the longest days of the year. The reduced rainfall goes hand in hand with the exciting feel of the season. Parallely, the town sports the highest sea temperature, further enhancing the beach festivities. Weather in June »Weather in July
July in Ewa Beach is characterized by the zenith of the summer heat, with high temperatures reaching 80.6°F (27°C) on average. Concomitant with the elevated temperatures is the all-time low monthly rainfall, making it the driest month of the year. Weather in July »Weather in August
The weather script in Ewa Beach continues its summer glory in August. The month sees minor augmentations in the temperature, but the climate remains predominantly warm and enjoyable. The town exhibits the highest temperatures, both sea and land, during this month. Weather in August »Weather in September
September in Ewa Beach witnesses an exquisite balance between the receding summer and the upcoming fall. The maintained ocean temperature underlines the persistent allure of the beachfront. The weather upholds the summer charm, facilitated by the pleasant temperatures and long beaches. Weather in September »Weather in October
As October rolls in, Ewa Beach commences its descent into the cooler season. However, the most impressive feature of October is not the dropping temperatures, but the equal duration of day and night. Along with this fascinating phenomenon, rainfall sees an upward shift, making the evenings more refreshing. Weather in October »Weather in November
November marks the initiation of the cooler season in Ewa Beach. The reduced temperature paves the way for enjoyable outdoor ventures without the summer heat. Coupled with the changing foliage, the town takes on a new hue. On the flip side, November experiences one of the lowest sunshine durations of 6.7 hours per day. Weather in November »Weather in December
December, the last month of the year, offers Ewa Beach a cooler reprieve from the draining summer heat. As the island veers towards its coldest, the city wraps up the year with soothing weather and festive vibrance. The mild drop in sea temperature slightly curtails water activities. Weather in December »Updated: Aug 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The months with the lowest humidity are January, April through June, August through November, with an average relative humidity of 74%.
In Ewa Beach, during the entire year, the rain falls for 172.2 days and collects up to 12.72" (323mm) of precipitation.
The months with the lowest UV index are January through May, October through December, with an average maximum UV index of 6.
The coldest period tends to be February, when average temperatures fluctuate between a high of 74.8°F (23.8°C) and a low of 69.4°F (20.8°C).
The month with the most rainfall in Ewa Beach is March, when the rain falls for 18.1 days and typically aggregates up to 1.77" (45mm) of precipitation.
With an average ocean temperature of 75.7°F (24.3°C), March is the month with the coldest seawater.
The month with the longest days is June, with an average of 13h and 24min of daylight.
June has the most sunshine of the year, with an average of 11h of sunshine.
The months with the highest UV index are June through September, with an average maximum UV index of 7.
The month with the least rainfall is July, when the rain falls for 11.3 days and typically collects 0.43" (11mm) of precipitation.
Ewa Beach's peak temperatures tend to occur in August and September, with an average high-temperature of 81.5°F (27.5°C).
With an average ocean temperature of 80.6°F (27°C), September is the month with the warmest seawater in Ewa Beach.
November has the least sunshine of the year, with an average of 6.7h of sunshine.
The most humid month in Ewa Beach is December, with an average relative humidity of 76%.
December has the shortest days of the year, with an average of 10h and 54min of daylight.
Ewa Beach does not observe Daylight Saving Time (DST). HST timezone is used throughout the entire year.
Average temperature
Ewa Beach, HI
The warmest months (with the highest average high temperature) are August and September (81.5°F).
The month with the lowest average high temperature is February (74.8°F).
The months with the highest average low temperature are August and September (76.3°F).
The coldest month (with the lowest average low temperature) is February (69.4°F).
Average pressure
Ewa Beach, HI
- Average pressure in January:
30"Hg - Average pressure in February:
30.01"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
30.05"Hg - Average pressure in May:
30.04"Hg - Average pressure in June:
30.03"Hg
- Average pressure in July:
30"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
29.97"Hg - Average pressure in November:
30"Hg - Average pressure in December:
29.99"Hg
The months with the highest atmospheric pressure are March and April (30.05"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed
Ewa Beach, HI
- Average wind speed in January:
9.1mph - Average wind speed in February:
10.2mph - Average wind speed in March:
11.2mph - Average wind speed in April:
10.9mph - Average wind speed in May:
9.6mph - Average wind speed in June:
11.7mph
- Average wind speed in July:
11.9mph - Average wind speed in August:
11.3mph - Average wind speed in September:
9.8mph - Average wind speed in October:
9.1mph - Average wind speed in November:
11mph - Average wind speed in December:
10mph
The windiest month (with the highest average wind speed) is July (11.9mph).
The calmest months (with the lowest average wind speed) are January and October (9.1mph).
Average humidity
Ewa Beach, HI
The month with the highest relative humidity is December (76%).
The months with the lowest relative humidity are January, April, May, June, August, September, October and November (74%).
Average rainfall
Ewa Beach, HI
- Average rainfall in January:
0.98" - Average rainfall in February:
1.42" - Average rainfall in March:
1.77" - Average rainfall in April:
0.94" - Average rainfall in May:
1.14" - Average rainfall in June:
0.83"
- Average rainfall in July:
0.43" - Average rainfall in August:
0.67" - Average rainfall in September:
0.83" - Average rainfall in October:
1.42" - Average rainfall in November:
0.91" - Average rainfall in December:
1.38"
The wettest month (with the highest rainfall) is March (1.77").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days
Ewa Beach, HI
- Average rainfall days in January:
12.3 days - Average rainfall days in February:
15 days - Average rainfall days in March:
18.1 days - Average rainfall days in April:
16.5 days - Average rainfall days in May:
16.7 days - Average rainfall days in June:
13.3 days
- Average rainfall days in July:
11.3 days - Average rainfall days in August:
12 days - Average rainfall days in September:
13.3 days - Average rainfall days in October:
15.7 days - Average rainfall days in November:
13.5 days - Average rainfall days in December:
14.5 days
The month with the highest number of rainy days is March (18.1 days).
The month with the least rainy days is July (11.3 days).
Average sea temperature
Ewa Beach, HI
The best month for swimming (with the highest average sea temperature) is September (80.6°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).
Average daylight / Average sunshine
Ewa Beach, HI
- Average daylight in January:
11h and 0min - Average daylight in February:
11h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 42min - Average daylight in May:
13h and 12min - Average daylight in June:
13h and 24min
- Average daylight in July:
13h and 18min - Average daylight in August:
12h and 48min - Average daylight in September:
12h and 18min - Average daylight in October:
11h and 36min - Average daylight in November:
11h and 6min - Average daylight in December:
10h and 54min
The month with the longest days is June (Average daylight: 13h and 24min).
The month with the shortest days is December (Average daylight: 10h and 54min).
- Average sunshine in January:
8h and 42min - Average sunshine in February:
8h and 18min - Average sunshine in March:
8h and 18min - Average sunshine in April:
8h and 36min - Average sunshine in May:
10h and 30min - Average sunshine in June:
11h and 0min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
9h and 12min - Average sunshine in September:
9h and 18min - Average sunshine in October:
8h and 30min - Average sunshine in November:
6h and 42min - Average sunshine in December:
6h and 48min
The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).
Average sunshine days
Ewa Beach, HI
- Average sunshine days in January:
13.9 days - Average sunshine days in February:
8.4 days - Average sunshine days in March:
6.8 days - Average sunshine days in April:
8.3 days - Average sunshine days in May:
10.3 days - Average sunshine days in June:
13.9 days
- Average sunshine days in July:
15.3 days - Average sunshine days in August:
15.3 days - Average sunshine days in September:
12.2 days - Average sunshine days in October:
9.5 days - Average sunshine days in November:
9.5 days - Average sunshine days in December:
10.5 days
The months with the most sunshine days are July and August (15.3 days).
The month with the least sunshine days is March (6.8 days).
Average UV index
Ewa Beach, HI
The months with the highest UV index are June, July, August and September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, October, November and December (UV index 6).
Average cloud cover
Ewa Beach, HI
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility
Ewa Beach, HI
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
