October weather forecast
Ewa Beach, HI

Share

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. Despite the reducing temperatures, the sea remains welcoming for mild water sports. While days remain sunny, the gradually encroaching nights usher in the comforting coolness that defines island autumn.

Temperature

Upon the onset of October, Ewa Beach witnesses an average high-temperature of a still moderately hot 81.1°F (27.3°C), showing a close resemblance to the prior month. The October average low temperature in Ewa Beach, marginally lower than the daytime high, records at a still moderately hot 76.1°F (24.5°C).

Heat index

The heat index in October is computed to be a hot 86°F (30°C). Long-standing exposure and activity could induce a feeling of tiredness and lead to heat cramps.
Heat index's context suggests values are appropriate for shady areas and slight breezes. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. An individual's perception of weather can be affected by a variety of elements including metabolic differences, being pregnant, and their level of physical exertion. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.

Humidity

The months with the lowest humidity are January, April through June, August through November, with an average relative humidity of 74%.

Rainfall

In Ewa Beach, in October, during 15.7 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. Throughout the year, there are 172.2 rainfall days, and 12.72" (323mm) of precipitation is accumulated.

Ocean temperature

In October, the average ocean temperature is 79.9°F (26.6°C).
Note: For any water activity, temperatures between 77°F (25°C) and 84.2°F (29°C) are deemed excellent and extremely satisfying for enduring periods.

Daylight

In October, the average length of the day is 11h and 39min.
On the first day of October, sunrise is at 6:23 am and sunset at 6:19 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 5:56 pm HST.

Sunshine

The average sunshine in October is 8.5h.

UV index

January through May, October through December, with an average maximum UV index of 6, are months with the lowest UV index in Ewa Beach. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 6 during October translates into the following directions:
Take precautions and utilize sun safety practices. Protection against skin and eye damage is required. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Alert! UV radiation becomes sharper due to reflections from sand and water.
Updated: Aug 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average October temperature?

In October, in Ewa Beach, the average high-temperature is 81.1°F (27.3°C), and the average low-temperature is 76.1°F (24.5°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which represents the influence of relative humidity on air temperature, in October is computed to be 86°F (30°C).

What is the least humid month?

The months with the lowest humidity are January, April through June, August through November, with an average relative humidity of 74%.

What is the average humidity in October?

The average relative humidity in October is 74%.

How much does it rain in October?

In October, the rain falls for 15.7 days. Throughout October, 1.42" (36mm) of precipitation is accumulated.

What is the ocean temperature in October?

In Ewa Beach, the average seawater temperature in October is 79.9°F (26.6°C). Water temperature between 77°F (25°C) and 84.2°F (29°C) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the average length of the day in October in Ewa Beach?

In October, the average day length is 11h and 39min.

When is the sunrise / sunset in October?

In October, on the first day of the month, sunrise is at 6:23 am and sunset at 6:19 pm. On the last day of the month, sunrise is at 6:34 am and sunset at 5:56 pm HST.

How long on average sun shines in October?

The average sunshine duration in October is 8.5h.

When is the lowest UV index?

January through May, October through December, with an average maximum UV index of 6, are months with the lowest UV index.

What is the UV index reading in October?

In Ewa Beach, the average daily maximum UV index in October is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in October
Ewa Beach, HI

Average temperature in October - Ewa Beach, HI
  • Average high temperature in October: 81.1°F

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).

  • Average low temperature in October: 76.1°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 in October
Ewa Beach, HI

Average pressure in October - Ewa Beach, HI
  • Average pressure in October: 29.97"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 in October
Ewa Beach, HI

Average wind speed in October - Ewa Beach, HI
  • Average wind speed in October: 9.1mph

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 in October
Ewa Beach, HI

Average humidity in October - Ewa Beach, HI
  • Average humidity in October: 74%

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 in October
Ewa Beach, HI

Average rainfall in October - Ewa Beach, HI
  • Average rainfall in October: 1.42"

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 in October
Ewa Beach, HI

Average rainfall days in October - Ewa Beach, HI
  • Average rainfall days in October: 15.7 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 in October
Ewa Beach, HI

Average sea temperature in October - Ewa Beach, HI
  • Average sea temperature in October: 79.9°F

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 in October /
Average sunshine in October
Ewa Beach, HI

Average daylight in October / Average sunshine in October - Ewa Beach, HI
  • Average daylight in October: 11h and 4min

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 October: 8h and 3min

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 in October
Ewa Beach, HI

Average sunshine days in October - Ewa Beach, HI
  • Average sunshine days in October: 9.5 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 in October
Ewa Beach, HI

Average UV index in October - Ewa Beach, HI
  • Average UV index in October: 6

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 in October
Ewa Beach, HI

Average cloud cover in October - Ewa Beach, HI
  • Average cloud cover in October: 32

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 in October
Ewa Beach, HI

Average visibility in October - Ewa Beach, HI
  • Average visibility in October: 6mi

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).

Ewa Beach, Hawaii, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location