Climate and monthly weather forecastPearl City, HI
Climate and monthly weather forecast
The climate of Pearl City
Pearl City has a tropical savanna climate also known as As in the Köppen Climate Classification. This climate type is associated with wet and dry seasons, and is characteristic of Pearl City, located in the beautiful region of Hawaii, USA. Average monthly temperatures fluctuate slightly throughout the year, making it a location where the weather is relatively constant.Temperatures in this Hawaiian hotspot, range from a pleasant 69.1°F (20.6°C) in the cooler month of January to a peak of 82°F (27.8°C) in the month of August. Relative humidity typically varies from 74% to a marginally higher 76%, while the level of cloud cover ranges from 36% to 44%. The wind speed typically varies from an average of 8.4mph (13.5km/h) to a peak of 11.3mph (18.2km/h). Gusts of wind, however, can reach up to 14.9mph (24km/h).
Rainfall is a common phenomenon all year round with an average rainfall ranging from 0.71in in the driest month to a peak of 2.09in during the most saturated month. The number of days with rainfall varies between 16.3 days and 20 days, making it quite a rainy area.
The best time to visit Pearl City
When considering the overall comfortable conditions, dry weather, and longer daylight hours, the best time to visit Pearl City occurs from May to August. During these months, temperatures peak around 78.6°F (25.9°C) to 82°F (27.8°C), and the average sea temperature is a comfortable 78.6°F (25.9°C) to 80.4°F (26.9°C). Moreover, daylight duration ranges from 13.2 hours to 13.4 hours providing ample time to explore.The worst time to visit Pearl City
Although Pearl City has pleasant weather year-round due to its tropical climate, the least opportune time to visit would be between March and April. During these months, the humidity is high and rainfall averages are the highest of the year. The average rainfall peaks at 1.93in in March, and the city experiences rain on an average of 20 days in the same month.Spring weather in Pearl City
Springtime in Pearl City, running from March to May, sees an increase in temperature, with values ranging from 75.4°F (24.1°C) to 78.6°F (25.9°C). Humidity ranges from 75% to 74%, and the average rainfall decreases from 1.93in in March to 1.46in in May. The sea temperature elevates from 75.7°F (24.3°C) in March to a comfortable 78°F (25.6°C) in May, making beach visits enjoyable.Summer weather in Pearl City
Summer in Pearl City from June to August presents the warmest temperatures ranging from 79.7°F (26.5°C) to 82°F (27.8°C). The rainfall decreases remarkably to 0.71in in June, with the highest sea temperatures at 79.1°F (26.2°C) to 80.4°F (26.9°C). This period recognizes the longest daylight hours, from 13.4 hours in June down to 12.8 hours in August.Autumn weather in Pearl City
Autumn features a slight reclination in temperature from 82°F (27.8°C) in September down to 73.2°F (22.9°C) in November. The sea temperature remains fairly warm from 80.4°F (26.9°C) in September down to 78.4°F (25.8°C) in November. Rainfall marks a peak during this period, with an increase from 1.46in in September up to 2.09in in November.Winter weather in Pearl City
Winter temperatures in Pearl City from December to February range from 69.1°F (20.6°C) to 75.4°F (24.1°C). These months receive a fairly low amount of rainfall with averages between 1.65in and 1.1in. Despite the season, the sea temperatures are warm enough for swimming, ranging from 76.6°F (24.8°C) to 75.9°F (24.4°C). However, sunlight hours are shortest during these months, ranging from 11 hours to 11.5 hours daily.Weather in January
Known for mild weather conditions throughout the year, Pearl City, Hawaii, starts the year with a balance of sunshine and rainfall. Comparatively warmer than December, January sets the stage for the year with a moderate high temperature of 75.7°F (24.3°C). Weather in January »Weather in February
The weather of Pearl City persists to be relatively stable as we move into February. The wind speed slightly rises with a high averaging in about 9.4mph (15.1km/h). Activities can comfortably continue under the sun’s warmth with negligible variations in temperature from the previous month. Weather in February »Weather in March
As spring starts to make its presence felt, March brings an increase in rainfall with an average of around 1.93" (49mm). Despite this rise in precipitation, Pearl City remains an inviting destination with its consistent weather. The cloud coverage remains almost static in comparison to previous months. Weather in March »Weather in April
With the advent of April, a slight rise in temperature can be felt. The days become slightly longer as Pearl City enjoys an average of 12.7 sunlight hours. The skyline, away from the sun, presents a dynamic spectacle as the percentage of cloud coverage hovers around 43%. Weather in April »Weather in May
Pearl City experiences the onset of the warmer months with May seeing an average high temperature of about 78.6°F (25.9°C). Despite the rise in temperature, weather conditions remain pleasing with cool gusts performing a balancing act. Weather in May »Weather in June
June ushers in the warmest months of the year in Pearl City, with truly tropical weather setting in. This is reflected in a sea temperature that remains pleasantly warm around 78.6°F (25.9°C). Barbecues, beach trips, and outdoor activities are common sights during this time. Weather in June »Weather in July
July is the warmest month in the year for Pearl City, with the average high temperature notching up to around 81.1°F (27.3°C). Despite the heat, the month maintains a comfortable climate with a relatively constant humidity level. Weather in July »Weather in August
August brings the highest recorded temperature of the year at Pearl City with 82°F (27.8°C) becoming the new normal. Consequently, the warm sea waters beckon with an average temperature of 79.5°F (26.4°C). The enduring summer season continues to mesmerize with its consistent weather patterns. Weather in August »Weather in September
As summer winds down, September presents a cooler but still warm climate. The sea remains at its warmest for the year at 80.4°F (26.9°C), welcoming visitors for various water activities. Pearl City’s characteristic comfortable weather persists, nourished by an almost constant level of humidity. Weather in September »Weather in October
Pearl City transitions into the colder part of the year in October. A significant change in the weather is the increase in rainfall making October the wettest month with an average of around 2.09" (53mm). The temperatures start to descend from their summer highs while still remaining quite warm. Weather in October »Weather in November
Bringing further changes to the weather, November sees a further decline in temperature. Pearl City experiences 11.1 hours of daylight, lower than in the former months but still considerable. The rainfall slightly drops, providing milder conditions compared to October. Weather in November »Weather in December
Rounding off the year, December brings Pearl City's lowest average high temperature at 76.5°F (24.7°C). Despite this, the weather remains agreeable with warmth during the day and relatively cooler nights. The amount of daylight drops further to 10.8 hours, giving way to longer nights under the Hawaiian sky. Weather in December »Updated: Jun 12, 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
Throughout the year, there are 208.4 rainfall days, and 16.5" (419mm) of precipitation is accumulated.
The months with the lowest UV index are January through August, October through December, with an average maximum UV index of 6.
The temperature hits its lowest levels in February and March, recording an average high-temperature of 75.4°F (24.1°C).
The months with the highest humidity in Pearl City, Hawaii, are February and December, with an average relative humidity of 76%.
The month with the coldest seawater is March, with an average ocean temperature of 75.7°F (24.3°C).
The months with the lowest humidity are April through June and September, with an average relative humidity of 74%.
The month with the longest days is June, with an average of 13h and 24min of daylight.
The month with the most sunshine is June, with an average of 9.9h of sunshine.
The month with the least rainfall is July, when the rain falls for 16.4 days and typically collects 0.71" (18mm) of precipitation.
The warmest period, with an average high-temperature of 82°F (27.8°C), falls in August and September.
The month with the warmest seawater is September, with an average ocean temperature of 80.4°F (26.9°C).
With an average maximum UV index of 7, September is the month with the highest UV index.
The month with the most rainfall is October, when the rain falls for 18.4 days and typically aggregates up to 2.09" (53mm) of precipitation.
The months with the least sunshine are November and December, with an average of 6.3h of sunshine.
December has the shortest days of the year, with an average of 10h and 54min of daylight.
Pearl City does not utilize Daylight Saving Time (DST). HST timezone is used over the entire year.
Average temperature
Pearl City, HI
The warmest months (with the highest average high temperature) are August and September (82°F).
The months with the lowest average high temperature are February and March (75.4°F).
The month with the highest average low temperature is September (75°F).
The coldest month (with the lowest average low temperature) is February (68°F).
Average pressure
Pearl City, 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:
30.06"Hg - Average pressure in May:
30.04"Hg - Average pressure in June:
30.03"Hg
- Average pressure in July:
30.01"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:
30"Hg
The month with the highest atmospheric pressure is April (30.06"Hg).
The months with the lowest atmospheric pressure are September and October (29.97"Hg).
Average wind speed
Pearl City, HI
- Average wind speed in January:
8.4mph - Average wind speed in February:
9.4mph - Average wind speed in March:
10.5mph - Average wind speed in April:
10.4mph - Average wind speed in May:
9.1mph - Average wind speed in June:
11.1mph
- Average wind speed in July:
11.3mph - Average wind speed in August:
10.6mph - Average wind speed in September:
9.3mph - Average wind speed in October:
8.5mph - Average wind speed in November:
10.2mph - Average wind speed in December:
9.1mph
The windiest month (with the highest average wind speed) is July (11.3mph).
The calmest month (with the lowest average wind speed) is January (8.4mph).
Average humidity
Pearl City, HI
The months with the highest relative humidity are February and December (76%).
The months with the lowest relative humidity are April, May, June and September (74%).
Average rainfall
Pearl City, HI
- Average rainfall in January:
1.1" - Average rainfall in February:
1.61" - Average rainfall in March:
1.93" - Average rainfall in April:
1.22" - Average rainfall in May:
1.46" - Average rainfall in June:
1.06"
- Average rainfall in July:
0.71" - Average rainfall in August:
1.02" - Average rainfall in September:
1.46" - Average rainfall in October:
2.09" - Average rainfall in November:
1.18" - Average rainfall in December:
1.65"
The wettest month (with the highest rainfall) is October (2.09").
The driest month (with the least rainfall) is July (0.71").
Average rainfall days
Pearl City, HI
- Average rainfall days in January:
13.5 days - Average rainfall days in February:
15.8 days - Average rainfall days in March:
20 days - Average rainfall days in April:
18.6 days - Average rainfall days in May:
18.4 days - Average rainfall days in June:
16.3 days
- Average rainfall days in July:
16.4 days - Average rainfall days in August:
16.8 days - Average rainfall days in September:
19.5 days - Average rainfall days in October:
18.4 days - Average rainfall days in November:
17.7 days - Average rainfall days in December:
17 days
The month with the highest number of rainy days is March (20 days).
The month with the least rainy days is January (13.5 days).
Average sea temperature
Pearl City, HI
The best month for swimming (with the highest average sea temperature) is September (80.4°F).
The coldest month (with the lowest average sea temperature) is March (75.7°F).
Average daylight / Average sunshine
Pearl City, 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 12min - Average sunshine in February:
7h and 36min - Average sunshine in March:
7h and 30min - Average sunshine in April:
7h and 48min - Average sunshine in May:
9h and 30min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
9h and 18min - Average sunshine in August:
8h and 18min - Average sunshine in September:
8h and 24min - Average sunshine in October:
7h and 48min - Average sunshine in November:
6h and 18min - Average sunshine in December:
6h and 18min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The months with the least sunshine are November and December (Average sunshine: 6h and 18min).
Average sunshine days
Pearl City, HI
- Average sunshine days in January:
12.3 days - Average sunshine days in February:
8.3 days - Average sunshine days in March:
7.1 days - Average sunshine days in April:
7.7 days - Average sunshine days in May:
8.7 days - Average sunshine days in June:
9.9 days
- Average sunshine days in July:
9.8 days - Average sunshine days in August:
8.7 days - Average sunshine days in September:
6.5 days - Average sunshine days in October:
6.3 days - Average sunshine days in November:
6.2 days - Average sunshine days in December:
9.2 days
The month with the most sunshine days is January (12.3 days).
The month with the least sunshine days is November (6.2 days).
Average UV index
Pearl City, HI
The month with the highest UV index is September (UV index 7).
The months with the lowest UV index are January, February, March, April, May, June, July, August, October, November and December (UV index 6).
Average cloud cover
Pearl City, HI
The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is January (Cloud cover 36).
Average visibility
Pearl City, 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).
