Kapaa, Hawaii 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

899
FXHW60 PHFO 020125
AFDHFO

Area Forecast Discussion
National Weather Service Honolulu HI
325 PM HST Thu May 1 2025

.SYNOPSIS...

Breezy trade winds will persist through the remainder of this week
into next week, gradually increasing in strength toward the
latter half of next week. Brief showers will favor windward and
mountain areas, with leeward areas remaining mostly dry, apart
from a few isolated showers at night.

&&

.DISCUSSION...

Trade winds prevail across the islands, increasing in strength
over the upcoming weekend and into next week. A 1030 mb broad
area of high pressure will persist northwest of the islands,
moving eastward through the next several days, with an elongated
frontal passage in its wake. This may result in a subtle veering
wind direction to a more east-southeast direction late Saturday.
Winds will revert back to a primarily eastern direction by
Monday, strengthening by mid-week.

By next week, a new, strong high will propagate eastward north of
the islands. The aforementioned frontal passage is expected to
weaken as it gets overrun by the established trades. Clouds and
showers will favor windward and mountain areas, especially during
the overnight and early morning hours. Conversely, limited
rainfall will be expected on leeward areas apart from a few
isolated showers during the night, foreshadowing the beginning of
the dry season. Aside from all this, leeward areas of the Big
Island will continue to expect clouds and showers each afternoon,
diminishing by the overnight hours.

&&

.AVIATION...

Moderate trades through the forecast period. Low cigs and SHRA
expected over windward and mauka locations. MVFR conds possible in
SHRA but otherwise VFR prevails.

No other AIRMETs are in effect.

&&

.MARINE...
High pressure north of the islands continues to bring moderate to
locally strong trade winds to the region, and those winds are
expected to continue through the weekend as the high moves to the
northeast of the islands. A Small Craft Advisory (SCA) is in
effect for the typical windier waters near Maui County and the Big
Island, and that is expected to remain in place into next week.

The current moderate to long period north-northwest swell will
peak tonight and then slowly decline this weekend. A series of
northwest to north swells are expected next week that should
produce near or above seasonal average surf.

A small, long period south swell that peaked today will linger
into Saturday. This swell will result in above summer average surf
heights before slowly subsiding early next week. A mix of both a
reinforcing south southwest swell and new long period south
southeast swell energy this weekend should maintain near to above
seasonal average surf. South-facing shore surf will generally
decline next week, but smaller south southwest swells will hold
surf at near summer averages through the middle of next week.

As the trades pick up a bit on Friday, expect a bit of an uptick
in the easterly wind wave chop, which will continue through the
weekend.

&&

.HFO WATCHES/WARNINGS/ADVISORIES...
Small Craft Advisory until 6 AM HST Saturday for Maalaea Bay-
Pailolo Channel-Alenuihaha Channel-Big Island Leeward Waters-Big
Island Southeast Waters.


&&

$$


DISCUSSION...Pierce/Foster
AVIATION...Walsh
MARINE...M Ballard