Monthly outlook for Akupu, HI: average high 75.2°, average low 69.5°. That is 5° below the climate normal for August. Precipitation is expected on 2 days (about 1.7 inches), against a normal of 4 days and 0.5 inches. The warmest day looks like 8 August (77.8°), the coolest 19 August (67.9°).
75.2°/69.5°
Average high / low
−5°
Below normal
2 / 4
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 August – 17 August
75.1°
84.2°
-5°
18 August – 27 August
75.4°
84.3°
-5°
28 August – 6 September
at normal
84.3°
—
August records over 66 years
91.6°7 August 2025All-time high
69.6°31 August 2021All-time low
Climate normals and records are computed from the nearest reference point — Kapolei (4 mi).
Sun, 0976° / 70°0
76 °
Akupu, Sunday, 9 August
Partly cloudy. High 76°, low 70°.
Pressure30.00 inHg
Wind11.8 mph NE
Humidity69%
Visibility6.2 mi
Dew point68°
Mon, 1077° / 70°0
77 °
Akupu, Monday, 10 August
Mostly clear. High 77°, low 70°.
Pressure29.97 inHg
Wind10.7 mph E
Humidity65%
Visibility6.2 mi
Dew point68°
Tue, 1176° / 69°0
76 °
Akupu, Tuesday, 11 August
Mostly clear. High 76°, low 69°.
Pressure29.94 inHg
Wind11.4 mph E
Humidity59%
Visibility6.2 mi
Dew point65°
Wed, 1275° / 68°0.01
75 °
Akupu, Wednesday, 12 August
Light rain. High 75°, low 68°.
Pressure29.94 inHg
Wind12.9 mph E
Humidity62%
Visibility6.2 mi
Dew point64°
Thu, 1375° / 69°0
75 °
Akupu, Thursday, 13 August
Partly cloudy. High 75°, low 69°.
Pressure29.94 inHg
Wind19 mph NE
Humidity65%
Visibility—
Dew point61°
Fri, 1475° / 69°0
75 °
Akupu, Friday, 14 August
Clear. High 75°, low 69°.
Pressure29.91 inHg
Wind21.1 mph NE
Humidity64%
Visibility—
Dew point61°
Sat, 1574° / 70°0.06
74 °
Akupu, Saturday, 15 August
Light rain. High 74°, low 70°.
Pressure29.91 inHg
Wind30.9 mph NE
Humidity74%
Visibility—
Dew point65°
Sun, 1674° / 70°1.48
74 °
Akupu, Sunday, 16 August
Heavy rain. High 74°, low 70°.
Pressure29.83 inHg
Wind40.6 mph NE
Humidity88%
Visibility—
Dew point67°
Mon, 1772° / 68°0.02
72 °
Akupu, Monday, 17 August
Light rain. High 72°, low 68°.
Pressure30.00 inHg
Wind14.9 mph E
Humidity79%
Visibility—
Dew point65°
Tue, 1874° / 68°0.04
74 °
Akupu, Tuesday, 18 August
Light rain. High 74°, low 68°.
Pressure29.97 inHg
Wind17 mph NE
Humidity74%
Visibility—
Dew point62°
Wed, 1974° / 68°0.02
74 °
Akupu, Wednesday, 19 August
Light rain. High 74°, low 68°.
Pressure29.97 inHg
Wind12.1 mph E
Humidity70%
Visibility—
Dew point61°
Thu, 2075° / 69°0.02
75 °
Akupu, Thursday, 20 August
Light rain. High 75°, low 69°.
Pressure30.00 inHg
Wind6 mph E
Humidity70%
Visibility—
Dew point64°
Fri, 2177° / 70°0.01
77 °
Akupu, Friday, 21 August
Light rain. High 77°, low 70°.
Pressure30.03 inHg
Wind11.7 mph E
Humidity72%
Visibility—
Dew point65°
Sat, 2276° / 71°0
76 °
Akupu, Saturday, 22 August
Light rain. High 76°, low 71°.
Pressure30.00 inHg
Wind14.9 mph E
Humidity71%
Visibility—
Dew point65°
Sun, 2376° / 71°0
76 °
Akupu, Sunday, 23 August
Overcast. High 76°, low 71°.
Pressure30.00 inHg
Wind15.2 mph E
Humidity65%
Visibility—
Dew point62°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2484° / 76°0.07
84 °
Akupu, Monday, 24 August
Climate normal for this date — 60-year average.
Average high84°
Average low76°
Average precipitation0.07 in
Chance of precipitation30%
Record high89° (2019)
Record low74° (2022)
Tue, 2584° / 76°0.03
84 °
Akupu, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high84°
Average low76°
Average precipitation0.03 in
Chance of precipitation13%
Record high89° (2025)
Record low73° (2006)
Wed, 2684° / 76°0.03
84 °
Akupu, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high84°
Average low76°
Average precipitation0.03 in
Chance of precipitation27%
Record high89° (2019)
Record low74° (1975)
Thu, 2784° / 76°0.02
84 °
Akupu, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high84°
Average low76°
Average precipitation0.02 in
Chance of precipitation18%
Record high89° (2017)
Record low73° (1975)
Fri, 2884° / 76°0.02
84 °
Akupu, Friday, 28 August
Climate normal for this date — 60-year average.
Average high84°
Average low76°
Average precipitation0.02 in
Chance of precipitation30%
Record high89° (2025)
Record low73° (2024)
Sat, 2985° / 76°0.02
85 °
Akupu, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high85°
Average low76°
Average precipitation0.02 in
Chance of precipitation20%
Record high90° (2023)
Record low74° (1975)
Sun, 3084° / 76°0.03
84 °
Akupu, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high84°
Average low76°
Average precipitation0.03 in
Chance of precipitation28%
Record high91° (2023)
Record low73° (2021)
Mon, 3184° / 76°0.04
84 °
Akupu, Monday, 31 August
Climate normal for this date — 60-year average.
Average high84°
Average low76°
Average precipitation0.04 in
Chance of precipitation33%
Record high89° (2019)
Record low70° (2021)
Tue, 0184° / 76°0.04
84 °
Akupu, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high84°
Average low76°
Average precipitation0.04 in
Chance of precipitation38%
Record high90° (2019)
Record low73° (2021)
Wed, 0284° / 76°0.03
84 °
Akupu, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high84°
Average low76°
Average precipitation0.03 in
Chance of precipitation32%
Record high89° (2019)
Record low73° (2025)
Thu, 0384° / 76°0.04
84 °
Akupu, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high84°
Average low76°
Average precipitation0.04 in
Chance of precipitation37%
Record high89° (2024)
Record low73° (2023)
Fri, 0484° / 76°0.04
84 °
Akupu, Friday, 4 September
Climate normal for this date — 60-year average.
Average high84°
Average low76°
Average precipitation0.04 in
Chance of precipitation32%
Record high89° (2025)
Record low72° (2023)
Sat, 0584° / 76°0.03
84 °
Akupu, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high84°
Average low76°
Average precipitation0.03 in
Chance of precipitation32%
Record high90° (2019)
Record low72° (2017)
Sun, 0684° / 76°0.02
84 °
Akupu, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high84°
Average low76°
Average precipitation0.02 in
Chance of precipitation12%
Record high89° (2023)
Record low71° (2023)
About the monthly outlook
How accurate is a 30-day forecast?
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Akupu, HI are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
Where do the 66-year records come from?
They are real temperature extremes recorded in Akupu, HI since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.