Monthly outlook for Waikapuna, HI: average high 82.8°, average low 77.1°. That is 1.7° above the climate normal for October. Precipitation is expected on 16 days (about 2.3 inches), against a normal of 7 days and 1.3 inches. The warmest day looks like 16 October (86.1°), the coolest 28 October (75.1°).
82.8°/77.1°
Average high / low
+1.7°
Above normal
16 / 7
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
83°
80°
+1.7°
26 October – 4 November
82.5°
79.6°
+1.6°
5 November – 14 November
at normal
79.1°
—
October records over 66 years
89.6°30 October 2020All-time high
66.7°19 October 1999All-time low
Climate normals and records are computed from the nearest reference point — Wai?o?ahukini (9 mi).
Sat, 1781° / 78°0.12
81 °
Waikapuna, Saturday, 17 October
Light rain. High 81°, low 78°.
Pressure30.09 inHg
Wind5.4 mph SW
Humidity90%
Visibility5.5 mi
Dew point64°
Sun, 1883° / 76°0.07
83 °
Waikapuna, Sunday, 18 October
Light rain. High 83°, low 76°.
Pressure30.09 inHg
Wind5.5 mph S
Humidity69%
Visibility6.2 mi
Dew point60°
Mon, 1984° / 77°0.22
84 °
Waikapuna, Monday, 19 October
Light rain. High 84°, low 77°.
Pressure30.09 inHg
Wind4.7 mph S
Humidity77%
Visibility6.2 mi
Dew point63°
Tue, 2083° / 77°0.08
83 °
Waikapuna, Tuesday, 20 October
Light rain. High 83°, low 77°.
Pressure30.09 inHg
Wind4.9 mph S
Humidity71%
Visibility—
Dew point72°
Wed, 2183° / 75°0.14
83 °
Waikapuna, Wednesday, 21 October
Light rain. High 83°, low 75°.
Pressure30.06 inHg
Wind4.5 mph S
Humidity62%
Visibility—
Dew point68°
Thu, 2282° / 77°0.07
82 °
Waikapuna, Thursday, 22 October
Light rain. High 82°, low 77°.
Pressure30.06 inHg
Wind3.6 mph E
Humidity72%
Visibility—
Dew point71°
Fri, 2383° / 78°0.07
83 °
Waikapuna, Friday, 23 October
Light rain. High 83°, low 78°.
Pressure30.06 inHg
Wind5.6 mph S
Humidity67%
Visibility—
Dew point71°
Sat, 2482° / 77°0.6
82 °
Waikapuna, Saturday, 24 October
Rain. High 82°, low 77°.
Pressure30.06 inHg
Wind10.6 mph E
Humidity72%
Visibility—
Dew point72°
Sun, 2582° / 78°0.13
82 °
Waikapuna, Sunday, 25 October
Light rain. High 82°, low 78°.
Pressure30.09 inHg
Wind11.9 mph NE
Humidity62%
Visibility—
Dew point67°
Mon, 2685° / 78°0.06
85 °
Waikapuna, Monday, 26 October
Light rain. High 85°, low 78°.
Pressure30.09 inHg
Wind5.9 mph E
Humidity64%
Visibility—
Dew point70°
Tue, 2780° / 76°0.07
80 °
Waikapuna, Tuesday, 27 October
Light rain. High 80°, low 76°.
Pressure30.09 inHg
Wind5.9 mph W
Humidity87%
Visibility—
Dew point76°
Wed, 2882° / 75°0.06
82 °
Waikapuna, Wednesday, 28 October
Light rain. High 82°, low 75°.
Pressure30.06 inHg
Wind6.1 mph SW
Humidity70%
Visibility—
Dew point70°
Thu, 2982° / 78°0.25
82 °
Waikapuna, Thursday, 29 October
Light rain. High 82°, low 78°.
Pressure30.00 inHg
Wind5.9 mph SW
Humidity83%
Visibility—
Dew point76°
Fri, 3082° / 78°0.17
82 °
Waikapuna, Friday, 30 October
Light rain. High 82°, low 78°.
Pressure30.03 inHg
Wind4.7 mph S
Humidity83%
Visibility—
Dew point76°
Sat, 3184° / 77°0.04
84 °
Waikapuna, Saturday, 31 October
Light rain. High 84°, low 77°.
Pressure30.12 inHg
Wind5.6 mph SW
Humidity75%
Visibility—
Dew point74°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0180° / 74°0.08
80 °
Waikapuna, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high80°
Average low74°
Average precipitation0.08 in
Chance of precipitation50%
Record high87° (2020)
Record low69° (2021)
Mon, 0280° / 74°0.08
80 °
Waikapuna, Monday, 2 November
Climate normal for this date — 60-year average.
Average high80°
Average low74°
Average precipitation0.08 in
Chance of precipitation43%
Record high87° (2019)
Record low67° (1980)
Tue, 0380° / 74°0.08
80 °
Waikapuna, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high80°
Average low74°
Average precipitation0.08 in
Chance of precipitation33%
Record high87° (2020)
Record low70° (1980)
Wed, 0479° / 74°0.13
79 °
Waikapuna, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high79°
Average low74°
Average precipitation0.13 in
Chance of precipitation42%
Record high86° (2020)
Record low70° (1988)
Thu, 0579° / 75°0.13
79 °
Waikapuna, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high79°
Average low75°
Average precipitation0.13 in
Chance of precipitation30%
Record high87° (2019)
Record low71° (1980)
Fri, 0679° / 75°0.06
79 °
Waikapuna, Friday, 6 November
Climate normal for this date — 60-year average.
Average high79°
Average low75°
Average precipitation0.06 in
Chance of precipitation40%
Record high86° (2019)
Record low69° (1985)
Sat, 0779° / 74°0.08
79 °
Waikapuna, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high79°
Average low74°
Average precipitation0.08 in
Chance of precipitation43%
Record high86° (2019)
Record low70° (2024)
Sun, 0879° / 74°0.06
79 °
Waikapuna, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high79°
Average low74°
Average precipitation0.06 in
Chance of precipitation33%
Record high86° (2019)
Record low70° (2024)
Mon, 0979° / 74°0.08
79 °
Waikapuna, Monday, 9 November
Climate normal for this date — 60-year average.
Average high79°
Average low74°
Average precipitation0.08 in
Chance of precipitation35%
Record high87° (2019)
Record low71° (1978)
Tue, 1079° / 74°0.06
79 °
Waikapuna, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high79°
Average low74°
Average precipitation0.06 in
Chance of precipitation25%
Record high86° (2019)
Record low68° (1978)
Wed, 1179° / 74°0.06
79 °
Waikapuna, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high79°
Average low74°
Average precipitation0.06 in
Chance of precipitation40%
Record high85° (2019)
Record low68° (2014)
Thu, 1279° / 74°0.07
79 °
Waikapuna, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high79°
Average low74°
Average precipitation0.07 in
Chance of precipitation35%
Record high86° (2019)
Record low70° (2025)
Fri, 1379° / 74°0.15
79 °
Waikapuna, Friday, 13 November
Climate normal for this date — 60-year average.
Average high79°
Average low74°
Average precipitation0.15 in
Chance of precipitation43%
Record high86° (2019)
Record low69° (2022)
Sat, 1479° / 74°0.1
79 °
Waikapuna, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high79°
Average low74°
Average precipitation0.1 in
Chance of precipitation45%
Record high85° (2019)
Record low69° (1974)
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 Waikapuna, 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 Waikapuna, 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.