Rule Rainbow Chaser

Rainbow Chaser Forecast for Hilo, Hawaii

Hilo, Hawaii, United States

Hilo combines a curved bayfront, coconut-lined parks, and nearby waterfalls, with Mauna Kea and Mauna Loa forming immense inland backdrops.

10 matching opportunities in the 14-day forecast.

Hourly forecast scores

Forecast valid from Sep 20, 2026, 5:00 AM UTC (one hour; not an observation)

Rainbow Probability

Sun Elevation-10.4°

Local Precipitation0.1mm

Local Rain0.0mm

Local Showers0.1mm

Local Precipitation Chance11%

Upcoming Opportunities

When all conditions match, PhotoWeather marks an opportunity window.

Times shown in Pacific/Honolulu

First upcoming window

Possible Rainbow

Hilo

Sun, Sep 20 · 16:00–17:00 · 1h window

Low confidence

49%

🌈Rainbow Probability70%

Sun Elevation: 31.5° (Daylight)

Local Precipitation: 0.1mm

Local Rain: 0.0mm

Local Showers: 0.1mm

Tentative Chance of Rainbow at Sunset

Hilo

Sun, Sep 20 · 17:00–18:00

🌈Rainbow Probability:68%

Low

Promising Chance of Rainbow

Hilo

Mon, Sep 21 · 16:00–17:00

🌈Rainbow Probability:90%

Medium

Possible Rainbow at Sunset

Hilo

Mon, Sep 21 · 17:00–18:00

🌈Rainbow Probability:73%

Low

Tentative Chance of Rainbow

Hilo

Tue, Sep 22 · 16:00–17:00

🌈Rainbow Probability:68%

Low

Possible Rainbow

Hilo

Tue, Sep 29 · 08:00–10:00

🌈Rainbow Probability:69.1-80%

Low

Possible Rainbow

Hilo

Wed, Sep 30 · 07:00–09:00

🌈Rainbow Probability:69.3-80%

Low

+3 more windows in the next 14 days

72-hour requirements breakdown

When available, this detailed table covers only the stated 72-hour horizon (typically 72–168 hours, depending on available hourly data). Opportunity records above span the full 14-day forecast period, so this table does not explain that entire period. Times shown in Pacific/Honolulu.

Most common blockers

Ranked across the 95-hour forecast horizon, not the full opportunity period.

Rainbow Probability90% of hours
Visibility42% of hours

5matching hours in the displayed 72-hour forecastJump to first displayed match

AND logic: all conditions required

Meets requirement

Misses requirement

Time Pacific/Honolulu	Rainbow Probability ≥ 60.0%	Visibility ≥ 8000.0m
Sat, Sep 19
Rule fails. 19:00	Rainbow Probability: 0%. Misses requirement	Visibility: 13520m. Meets requirement
Rule fails. 20:00	Rainbow Probability: 0%. Misses requirement	Visibility: 19560m. Meets requirement
Rule fails. 21:00	Rainbow Probability: 0%. Misses requirement	Visibility: 38680m. Meets requirement
Rule fails. 22:00	Rainbow Probability: 0%. Misses requirement	Visibility: 38040m. Meets requirement
Rule fails. 23:00	Rainbow Probability: 0%. Misses requirement	Visibility: 31440m. Meets requirement
Sun, Sep 20
Rule fails. 24:00	Rainbow Probability: 0%. Misses requirement	Visibility: 21740m. Meets requirement
Rule fails. 01:00	Rainbow Probability: 0%. Misses requirement	Visibility: 20220m. Meets requirement
Rule fails. 02:00	Rainbow Probability: 0%. Misses requirement	Visibility: 22900m. Meets requirement
Rule fails. 03:00	Rainbow Probability: 0%. Misses requirement	Visibility: 23260m. Meets requirement
Rule fails. 04:00	Rainbow Probability: 0%. Misses requirement	Visibility: 19520m. Meets requirement
Rule fails. 05:00	Rainbow Probability: 0%. Misses requirement	Visibility: 18200m. Meets requirement
Rule fails. 06:00	Rainbow Probability: 0%. Misses requirement	Visibility: 23040m. Meets requirement
Rule fails. 07:00	Rainbow Probability: 0%. Misses requirement	Visibility: 4920m. Misses requirement
Rule fails. 08:00	Rainbow Probability: 0%. Misses requirement	Visibility: 8160m. Meets requirement
Rule fails. 09:00	Rainbow Probability: 0%. Misses requirement	Visibility: 15540m. Meets requirement
Rule fails. 10:00	Rainbow Probability: 0%. Misses requirement	Visibility: 8200m. Meets requirement
Rule fails. 11:00	Rainbow Probability: 0%. Misses requirement	Visibility: 12540m. Meets requirement
Rule fails. 12:00	Rainbow Probability: 0%. Misses requirement	Visibility: 11340m. Meets requirement
Rule fails. 13:00	Rainbow Probability: 0%. Misses requirement	Visibility: 9020m. Meets requirement
Rule fails. 14:00	Rainbow Probability: 0%. Misses requirement	Visibility: 18440m. Meets requirement
Rule fails. 15:00	Rainbow Probability: 0%. Misses requirement	Visibility: 14000m. Meets requirement
Rule passes. 16:00	Rainbow Probability: 70%. Meets requirement	Visibility: 16940m. Meets requirement
Rule passes. 17:00	Rainbow Probability: 68%. Meets requirement	Visibility: 9560m. Meets requirement
Rule fails. 18:00	Rainbow Probability: 0%. Misses requirement	Visibility: 6960m. Misses requirement
Rule fails. 19:00	Rainbow Probability: 0%. Misses requirement	Visibility: 8200m. Meets requirement
Rule fails. 20:00	Rainbow Probability: 0%. Misses requirement	Visibility: 10520m. Meets requirement
Rule fails. 21:00	Rainbow Probability: 0%. Misses requirement	Visibility: 9400m. Meets requirement
Rule fails. 22:00	Rainbow Probability: 0%. Misses requirement	Visibility: 9540m. Meets requirement
Rule fails. 23:00	Rainbow Probability: 0%. Misses requirement	Visibility: 15260m. Meets requirement
Mon, Sep 21
Rule fails. 24:00	Rainbow Probability: 0%. Misses requirement	Visibility: 940m. Misses requirement
Rule fails. 01:00	Rainbow Probability: 0%. Misses requirement	Visibility: 600m. Misses requirement
Rule fails. 02:00	Rainbow Probability: 0%. Misses requirement	Visibility: 540m. Misses requirement
Rule fails. 03:00	Rainbow Probability: 0%. Misses requirement	Visibility: 640m. Misses requirement
Rule fails. 04:00	Rainbow Probability: 0%. Misses requirement	Visibility: 920m. Misses requirement
Rule fails. 05:00	Rainbow Probability: 0%. Misses requirement	Visibility: 1340m. Misses requirement
Rule fails. 06:00	Rainbow Probability: 0%. Misses requirement	Visibility: 1140m. Misses requirement
Rule fails. 07:00	Rainbow Probability: 0%. Misses requirement	Visibility: 900m. Misses requirement
Rule fails. 08:00	Rainbow Probability: 0%. Misses requirement	Visibility: 3460m. Misses requirement
Rule fails. 09:00	Rainbow Probability: 0%. Misses requirement	Visibility: 8240m. Meets requirement
Rule fails. 10:00	Rainbow Probability: 0%. Misses requirement	Visibility: 19540m. Meets requirement
Rule fails. 11:00	Rainbow Probability: 0%. Misses requirement	Visibility: 23500m. Meets requirement
Rule fails. 12:00	Rainbow Probability: 0%. Misses requirement	Visibility: 43060m. Meets requirement
Rule fails. 13:00	Rainbow Probability: 0%. Misses requirement	Visibility: 12620m. Meets requirement
Rule fails. 14:00	Rainbow Probability: 0%. Misses requirement	Visibility: 12380m. Meets requirement
Rule fails. 15:00	Rainbow Probability: 0%. Misses requirement	Visibility: 12940m. Meets requirement
Rule passes. 16:00	Rainbow Probability: 90%. Meets requirement	Visibility: 13960m. Meets requirement
Rule passes. 17:00	Rainbow Probability: 73%. Meets requirement	Visibility: 13560m. Meets requirement
Rule fails. 18:00	Rainbow Probability: 0%. Misses requirement	Visibility: 7680m. Misses requirement
Rule fails. 19:00	Rainbow Probability: 0%. Misses requirement	Visibility: 5740m. Misses requirement
Rule fails. 20:00	Rainbow Probability: 0%. Misses requirement	Visibility: 6140m. Misses requirement
Rule fails. 21:00	Rainbow Probability: 0%. Misses requirement	Visibility: 5100m. Misses requirement
Rule fails. 22:00	Rainbow Probability: 0%. Misses requirement	Visibility: 4460m. Misses requirement
Rule fails. 23:00	Rainbow Probability: 0%. Misses requirement	Visibility: 4440m. Misses requirement
Tue, Sep 22
Rule fails. 24:00	Rainbow Probability: 0%. Misses requirement	Visibility: 3540m. Misses requirement
Rule fails. 01:00	Rainbow Probability: 0%. Misses requirement	Visibility: 3140m. Misses requirement
Rule fails. 02:00	Rainbow Probability: 0%. Misses requirement	Visibility: 3880m. Misses requirement
Rule fails. 03:00	Rainbow Probability: 0%. Misses requirement	Visibility: 3360m. Misses requirement
Rule fails. 04:00	Rainbow Probability: 0%. Misses requirement	Visibility: 2140m. Misses requirement
Rule fails. 05:00	Rainbow Probability: 0%. Misses requirement	Visibility: 600m. Misses requirement
Rule fails. 06:00	Rainbow Probability: 0%. Misses requirement	Visibility: 1000m. Misses requirement
Rule fails. 07:00	Rainbow Probability: 57%. Misses requirement	Visibility: 2040m. Misses requirement
Rule fails. 08:00	Rainbow Probability: 77%. Meets requirement	Visibility: 3960m. Misses requirement
Rule fails. 09:00	Rainbow Probability: 43%. Misses requirement	Visibility: 4460m. Misses requirement
Rule fails. 10:00	Rainbow Probability: 0%. Misses requirement	Visibility: 9360m. Meets requirement
Rule fails. 11:00	Rainbow Probability: 0%. Misses requirement	Visibility: 17440m. Meets requirement
Rule fails. 12:00	Rainbow Probability: 0%. Misses requirement	Visibility: 24820m. Meets requirement
Rule fails. 13:00	Rainbow Probability: 0%. Misses requirement	Visibility: 28460m. Meets requirement
Rule fails. 14:00	Rainbow Probability: 0%. Misses requirement	Visibility: 25920m. Meets requirement
Rule fails. 15:00	Rainbow Probability: 0%. Misses requirement	Visibility: 5160m. Misses requirement
Rule passes. 16:00	Rainbow Probability: 68%. Meets requirement	Visibility: 9980m. Meets requirement
Rule fails. 17:00	Rainbow Probability: 65%. Meets requirement	Visibility: 7200m. Misses requirement
Rule fails. 18:00	Rainbow Probability: 0%. Misses requirement	Visibility: 5740m. Misses requirement

How to read: colored cells show whether each predicate requirement is met; highlighted rows mean the full rule matched (an opportunity).

Supporting forecast inputs

Additional hourly values for interpreting the forecast and any derived scores. See the separate requirements breakdown for rule logic; missing values are unavailable.

Forecast time (Pacific/Honolulu)	Precipitation Chance	Rainfall	Showers	Solar Elevation	Sunshine Duration	Total Cloud Coverage	Total Precipitation
Sat, Sep 19, 2026Sunrise 06:08 · Sunset 18:18
19:00 Night	11%	0mm	0.1mm	-10°	0seconds	100%	0.1mm
20:00 Night	14%	0mm	0.2mm	-24°	0seconds	100%	0.2mm
21:00 Night	16%	0mm	0mm	-38°	0seconds	100%	0mm
22:00 Night	17%	0mm	0mm	-51°	0seconds	100%	0mm
23:00 Night	18%	0mm	0mm	-62°	0seconds	55%	0mm
Sun, Sep 20, 2026Sunrise 06:09 · Sunset 18:17
24:00 Night	18%	0mm	0mm	-69°	0seconds	44%	0mm
01:00 Night	18%	0mm	0mm	-66°	0seconds	91%	0mm
02:00 Night	18%	0mm	0mm	-57°	0seconds	91%	0mm
03:00 Night	16%	0mm	0mm	-44°	0seconds	85%	0mm
04:00 Night	14%	0mm	0mm	-31°	0seconds	88%	0mm
05:00 Night	14%	0mm	0mm	-17°	0seconds	94%	0mm
06:00 Night	16%	0mm	0mm	-2.8°	0seconds	69%	0mm
07:00	20%	0mm	0mm	11°	1992seconds	77%	0mm
08:00	24%	0mm	0mm	25°	3600seconds	53%	0mm
09:00	28%	0mm	0mm	39°	3600seconds	34%	0mm
10:00	32%	0.1mm	0.1mm	52°	3600seconds	72%	0.2mm
11:00	33%	0mm	0.2mm	64°	3600seconds	95%	0.2mm
12:00	27%	0mm	0.2mm	71°	3600seconds	60%	0.2mm
13:00	18%	0mm	0.2mm	68°	3600seconds	55%	0.2mm
14:00	12%	0mm	0.1mm	58°	3600seconds	99%	0.1mm
15:00	10%	0mm	0.1mm	45°	3600seconds	100%	0.1mm
16:00	11%	0mm	0.1mm	32°	3600seconds	97%	0.1mm
17:00	14%	0mm	0.1mm	18°	2184seconds	99%	0.1mm
18:00	20%	0.1mm	0.2mm	3.6°	2001seconds	100%	0.3mm
19:00 Night	27%	0.1mm	0.1mm	-11°	0seconds	100%	0.2mm
20:00 Night	33%	0.1mm	0.1mm	-25°	0seconds	100%	0.2mm
21:00 Night	35%	0mm	0.2mm	-38°	0seconds	100%	0.2mm
22:00 Night	34%	0.1mm	0.2mm	-51°	0seconds	100%	0.3mm
23:00 Night	33%	0mm	0.1mm	-63°	0seconds	100%	0.1mm
Mon, Sep 21, 2026Sunrise 06:09 · Sunset 18:17
24:00 Night	30%	0mm	0mm	-69°	0seconds	84%	0mm
01:00 Night	25%	0mm	0mm	-67°	0seconds	75%	0mm
02:00 Night	24%	0mm	0mm	-57°	0seconds	75%	0mm
03:00 Night	29%	0mm	0.1mm	-44°	0seconds	96%	0.1mm
04:00 Night	37%	0mm	0.1mm	-31°	0seconds	97%	0.1mm
05:00 Night	43%	0mm	0mm	-17°	0seconds	72%	0mm
06:00 Night	46%	0mm	0mm	-2.9°	0seconds	43%	0mm
07:00	48%	0mm	0mm	11°	2843seconds	62%	0mm
08:00	49%	0mm	0mm	25°	3600seconds	70%	0mm
09:00	50%	0mm	0mm	39°	3600seconds	43%	0mm
10:00	50%	0mm	0mm	52°	3600seconds	38%	0mm
11:00	49%	0mm	0mm	64°	3600seconds	42%	0mm
12:00	43%	0mm	0mm	70°	3600seconds	86%	0mm
13:00	36%	0mm	0mm	68°	3600seconds	60%	0mm
14:00	35%	0.1mm	0.2mm	58°	3600seconds	23%	0.3mm
15:00	46%	0mm	0.2mm	45°	3600seconds	31%	0.2mm
16:00	62%	0mm	0.1mm	31°	3600seconds	27%	0.1mm
17:00	76%	0.1mm	0mm	17°	3600seconds	24%	0.1mm
18:00	82%	0mm	0.1mm	3.4°	3600seconds	96%	0.1mm
19:00 Night	86%	0.3mm	0mm	-11°	0seconds	97%	0.3mm
20:00 Night	88%	0.2mm	0.1mm	-25°	0seconds	89%	0.3mm
21:00 Night	90%	0.3mm	0.1mm	-39°	0seconds	45%	0.4mm
22:00 Night	92%	0.2mm	0.2mm	-52°	0seconds	72%	0.4mm
23:00 Night	92%	0.4mm	0.5mm	-63°	0seconds	90%	0.9mm
Tue, Sep 22, 2026Sunrise 06:09 · Sunset 18:16
24:00 Night	89%	0.8mm	0.6mm	-70°	0seconds	96%	1.4mm
01:00 Night	85%	0.6mm	2mm	-67°	0seconds	95%	2.6mm
02:00 Night	82%	1mm	0.6mm	-57°	0seconds	64%	1.6mm
03:00 Night	83%	0.2mm	0mm	-45°	0seconds	56%	0.2mm
04:00 Night	86%	0mm	0mm	-31°	0seconds	42%	0mm
05:00 Night	88%	0mm	0mm	-17°	0seconds	66%	0mm
06:00 Night	90%	0.2mm	0.1mm	-2.9°	0seconds	78%	0.3mm
07:00	92%	0.3mm	0mm	11°	2250seconds	66%	0.3mm
08:00	92%	0.5mm	0mm	25°	3600seconds	66%	0.5mm
09:00	88%	0.7mm	0.2mm	39°	3600seconds	94%	0.9mm
10:00	81%	0.3mm	0.2mm	52°	3600seconds	71%	0.5mm
11:00	75%	0.1mm	0mm	63°	3600seconds	37%	0.1mm
12:00	69%	0mm	0mm	70°	3600seconds	51%	0mm
13:00	63%	0mm	0mm	67°	3600seconds	57%	0mm
14:00	61%	0mm	0mm	57°	3600seconds	51%	0mm
15:00	68%	0mm	0.2mm	45°	3600seconds	65%	0.2mm
16:00	79%	0.4mm	0.5mm	31°	3600seconds	95%	0.9mm
17:00	88%	0mm	0.1mm	17°	3600seconds	95%	0.1mm
18:00	93%	0.3mm	0.8mm	3.2°	3600seconds	100%	1.1mm

How this forecast is evaluated

See which weather signals PhotoWeather uses to identify Rainbow Chaser conditions across Hawaii. The requirements and hourly values above show how those signals apply at Hilo.

Explore Rainbow Chaser conditions across Hawaii →

Recorded match history

Completed PhotoWeather forecast matches recorded for this exact rule at Hilo during the last 365 days.

Last 30 days

recorded matching windows · 58% average confidence

Last 90 days

147

recorded matching windows · 58% average confidence

Last 365 days

341

recorded matching windows · 59% average confidence

Most frequent recorded start hour

16:00 local time, shared by 101 of 341 matches recorded in the last 365 days.

Most represented month

July, with 57 of 341 matches recorded in the last 365 days.

These figures use completed PhotoWeather MatchEvent records from the previous 365 days only. They describe recorded forecast matches, not observations, climatological probability, or a guarantee of future conditions.

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How this forecast is made

Opportunities are threshold-based signals: PhotoWeather checks whether forecast conditions match the rules for a photography scenario. They are planning guidance, not guarantees. Forecasts can change as new model runs arrive, and confidence generally decreases farther into the forecast horizon, so recheck conditions before travelling.

The weather forecast foundation comes through Open-Meteo , which aggregates models from weather agencies. PhotoWeather applies condition-specific thresholds and derived calculations; not every condition uses every model or data input.

How opportunities work → Weather data sources →

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