Halulu Falls — a waterfall in Kauai County, Hawaii at about 295 m (968 ft) above sea level — is a popular subject for landscape photographers. It sits roughly 9.2 km (5.7 mi) N of Kalāheo.
Sunrise & sunset directions
At Halulu Falls the sunrise point swings a long way through the year: about 64° (ENE) at the June solstice and 115° (ESE) in late December. Sunset moves from 296° (WNW) in June to 245° (WSW) in December, and the midday sun climbs to 89° in summer but only 45° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 6:43 AM | 90° E | 6:50 PM | 270° W | 68° | 12h 07m |
| June solstice (Jun 21) | 5:56 AM | 64° ENE | 7:25 PM | 296° WNW | 89° | 13h 29m |
| September equinox (Sep 22) | 6:28 AM | 89° E | 6:36 PM | 271° W | 68° | 12h 08m |
| December solstice (Dec 21) | 7:13 AM | 115° ESE | 6:01 PM | 245° WSW | 45° | 10h 47m |
Azimuth is measured clockwise from true north (90° = east, 270° = west). Computed for 2026; values change by less than a degree from year to year.
Golden hour & blue hour by month
Waterfalls photograph best in soft, even light: overcast days, deep shade, or the hour after sunrise before direct sun hits the water. Bright sun on white water blows highlights and adds harsh contrast.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 6:56 AM | 7:20 AM | 7:52 AM | 5:44 PM | 6:16 PM | 6:40 PM | 10h 56m |
| February | 6:47 AM | 7:10 AM | 7:41 AM | 6:06 PM | 6:36 PM | 6:59 PM | 11h 26m |
| March | 6:25 AM | 6:48 AM | 7:17 AM | 6:19 PM | 6:48 PM | 7:10 PM | 12h 01m |
| April | 5:56 AM | 6:19 AM | 6:49 AM | 6:29 PM | 6:58 PM | 7:21 PM | 12h 40m |
| May | 5:36 AM | 6:00 AM | 6:31 AM | 6:40 PM | 7:11 PM | 7:35 PM | 13h 11m |
| June | 5:30 AM | 5:55 AM | 6:28 AM | 6:51 PM | 7:24 PM | 7:49 PM | 13h 28m |
| July | 5:40 AM | 6:04 AM | 6:36 AM | 6:53 PM | 7:25 PM | 7:50 PM | 13h 21m |
| August | 5:53 AM | 6:17 AM | 6:47 AM | 6:40 PM | 7:10 PM | 7:34 PM | 12h 54m |
| September | 6:04 AM | 6:26 AM | 6:55 AM | 6:13 PM | 6:43 PM | 7:05 PM | 12h 17m |
| October | 6:12 AM | 6:35 AM | 7:05 AM | 5:44 PM | 6:14 PM | 6:37 PM | 11h 39m |
| November | 6:28 AM | 6:51 AM | 7:23 AM | 5:25 PM | 5:56 PM | 6:20 PM | 11h 05m |
| December | 6:46 AM | 7:10 AM | 7:43 AM | 5:25 PM | 5:58 PM | 6:22 PM | 10h 48m |
Local time (Pacific/Honolulu), including daylight saving time. Golden hour runs from about −4° to +6° solar altitude, so the morning golden hour begins during blue hour, before sunrise.
Milky Way & night sky
From Halulu Falls, the Milky Way core is visible in a dark sky from February through October. June gives the longest window (about 7.7 hours on a moonless night), and the core peaks around 39° above the southern horizon. Our light-pollution model puts the sky at about Bortle 3 (rural sky), good enough for detailed Milky Way images.
| Month | Core visible (15th) | Hours | Max altitude | Direction |
|---|---|---|---|---|
| January | Below 10° in darkness | — | 4° | — |
| February | 4:31 AM – 5:51 AM | 1.3 | 25° | SE → SE |
| March | 2:42 AM – 5:32 AM | 2.8 | 36° | SE → SSE |
| April | 12:35 AM – 4:55 AM | 4.3 | 39° | SE → S |
| May | 10:33 PM – 4:33 AM | 6.0 | 39° | SE → SSW |
| June | 8:49 PM – 4:29 AM | 7.7 | 39° | SE → SW |
| July | 8:49 PM – 2:59 AM | 6.2 | 39° | SSE → SW |
| August | 8:29 PM – 12:59 AM | 4.5 | 39° | S → SW |
| September | 7:57 PM – 10:57 PM | 3.0 | 36° | SSW → SW |
| October | 7:28 PM – 8:58 PM | 1.5 | 26° | SW → SW |
| November | Below 10° in darkness | — | 8° | — |
| December | Below 10° in darkness | — | -17° | — |
Window when the galactic core is at least 10° high during astronomical darkness on the 15th of each month. Pick nights within a few days of the new moon. Plan exact nights with the Milky Way planner.
Estimated sky darkness: 3 Bortle 3 — Rural sky. Some light domes sit on the horizon, but the Milky Way still looks complex overhead. Modeled zenith brightness ≈ 21.29 mag/arcsec².
Weather & best season
Long-term NASA satellite data for this area show September as the clearest month (about 50% average cloud cover) and March as the cloudiest (69%). September is the warmest month and February the coldest, which matters for gear, snow access and how long batteries last at night.
Average cloud cover (%)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High °F | 79 | 78 | 78 | 78 | 81 | 81 | 83 | 83 | 84 | 83 | 81 | 80 |
| Low °F | 66 | 66 | 65 | 68 | 70 | 73 | 74 | 75 | 76 | 74 | 71 | 66 |
| Precip. (in) | 1.8 | 3.0 | 3.6 | 1.7 | 1.3 | 1.1 | 1.1 | 1.2 | 1.3 | 2.3 | 2.5 | 3.0 |
Monthly climatology for the surrounding 1° grid cell from NASA POWER (MERRA-2). Mountain sites can be colder and cloudier than the cell average.
Photography tips for this waterfall
- Keep a microfiber cloth handy — spray drifts onto the lens, especially at the plunge pool.
- Bracket shutter speeds: 1/8 s, 1/2 s and 2 s give very different water textures and you can choose later.
- A 3-stop ND filter lets you use slow shutter speeds even when the light is bright.
- Shoot a vertical and a horizontal frame; tall falls often work better in portrait orientation.
- Tell someone where you're going in remote areas and carry the ten essentials.
Season: Peak flow is usually in late spring; autumn adds color around the falls, and winter can bring ice formations at colder locations.
Suggested gear: Tripod, Circular polarizer, 3–6 stop ND filter, Lens cloth, Waterproof footwear. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Nearby photo spots
Other locations within 25 km of Halulu Falls, closest first.
Waterfall
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Mountain PeakFAQ
When is the best time to photograph Halulu Falls?
What time is golden hour at Halulu Falls?
Where does the sun rise and set at Halulu Falls?
Can you see the Milky Way from Halulu Falls?
Do you need a permit to photograph at Halulu Falls?
How far is Halulu Falls from Kalāheo?
Sources
Location data: USGS GNIS / GeoNames. Sun, moon and Milky Way times are computed by LWPhoto Atlas for 2026. Climate: NASA POWER. Sky darkness is a population-based estimate (Walker's law), not a measurement. See data sources & licenses.