Hawaiian Paradise Park, Hawaii 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

853
FXHW60 PHFO 071333
AFDHFO

Area Forecast Discussion
National Weather Service Honolulu HI
333 AM HST Thu Aug 7 2025

.SYNOPSIS...
Trade winds will return to the islands today, a bit earlier than
originally expected, drier humidity trends will follow and last
through Saturday. Brief passing showers are expected to develop over
windward mountain areas. Tropical Storm Henriette will also
continue drifting westward, passing just north of the islands from
Sunday through Monday. This next system will produce similar
lighter hybrid sea breeze and trade winds, increasing shower
trends over island interior sections, with very warm and humid
conditions lasting into Monday. Trade winds begin to transition
back into the islands with decreasing humidity trends and a more
typically stable trade wind weather pattern from Monday afternoon
onward.

&&

.DISCUSSION...
The satellite picture this morning shows a north to south cloud
band associated with wind convergence between the lighter winds
over the islands and the returning trade winds. Trade winds are
returning a bit sooner than we had in the forecast 24 hours ago.
Drier conditions will move in with the returning trades and
local relative humidity will drop back to normal summertime
levels. Subsidence temperature inversion heights will drop to
around the 5,000 foot elevation level, keeping shower activity to
a minimum favoring the windward mountain areas through Saturday.
Brief periods of high level cirrus clouds may enhance island
sunrise and sunset colors through the week.

The most recent volcanic eruption from Kilauea on the Big Island is
producing some VOG (Volcanic smOG) at local air quality sensors
mainly along the southern and Kona slopes of the Big Island this
morning. Sea breezes along the Kona slopes each day may mix this
VOG as far north as Waimea town. The returning easterly trade
winds will likely keep much of the VOG concentrations away from
the smaller islands through Saturday. A portion of this VOG plume
may possibly drift northward into the smaller islands if emissions
continue by Sunday as the trade winds diminish.

Medium range global models and National Hurricane Center
forecasts continue to show Tropical Storm Henriette passing just
north of the islands from Sunday through Monday, once again
disrupting trade winds, enhancing leeward and interior island
shower activity, and producing warm and very humid weather.
Moderate trade winds with drier trends develop from late Monday
onward, with more typical summer weather conditions lasting
through the end of next week.

&&

.AVIATION...
Trade winds return today as onshore sea breezes retreat to the
more terrain sheltered western slopes of each island. Clouds and
brief passing showers will return to windward and mountain areas,
favoring the overnight to early morning hours.

No AIRMETs in effect.

&&

.MARINE...
Trade winds will strengthen today in the wake of a weak trough
passage into the northwest offshore waters. A Small Craft
Advisory is in effect through late tonight for locally strong
trades across the windier waters surrounding Maui County and Big
Island. High pressure far northeast of the state will drift to
the north over the weekend as Tropical Storm Henriette approaches
the region from the east. Henriette will take a similar path as
Gil and this will weaken the pressure gradient back to the high,
resulting in weaker weekend trades. Henriette will be far north of
the northern Hawaiian offshore waters early next week.

Long period forerunners from the next south swell are delayed but
should be entering our waters later today and build in tonight. A
large reinforcing southern impulse will arrive late Friday through
early Saturday and peak south swell going into the weekend. South-
facing surf will reach High Surf Advisory levels by Friday with
heights nearing High Surf Warning thresholds Saturday.

Eastern exposure surf has fallen a bit with the passage of an
eastern fetch from Gil and lighter trades. Strengthening trades
will allow eastern chop to lift back to near seasonal averages
later today into tonight. A captured east swell from Tropical
Storm Henriette will likely arrive this weekend, increasing east
surf by another foot or so.

A very small northwest swell passing through today will keep
north surf from going completely flat.

Peak afternoon high tides, combined with elevated water levels
running about a half a foot higher than predicted and a large
south swell, will lead to minor flooding along many south-facing
shorelines and low lying coastal areas through Saturday. Water
levels should fall below thresholds during peak afternoon high
tides Sunday.

&&

.FIRE WEATHER...
Trade winds return to the islands today with elevated humidity
levels for this time of year will decrease through Saturday as
drier air moves back into the Hawaii Region. Another round of
deep tropical moisture in a hybrid trade wind sea breeze pattern
will sweep through the islands from Sunday into Monday as
Henriette follows a similar path. Moderate trade winds will begin
to build back into the state from late Monday into Wednesday with
drier and more stable weather in the long range forecast.
Temperature inversion heights near Maui and the Big Island today
will range from 4,500 to 5,500 feet.

&&

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

&&

$$

DISCUSSION...Bohlin
AVIATION...Bohlin
MARINE...Blood
FIRE WEATHER...Bohlin