Iva Bell Hot Springs is a hot spring in Fresno County, California at about 2,250 m (7,382 ft) above sea level. It is part of Sierra National Forest. The nearest town is Mammoth Lakes, about 14.2 km (8.8 mi) away (Iva Bell Hot Springs lies SSW of town).
Wikidata describes it as: “spring in Fresno County, California, United States of America”.
Sunrise & sunset directions
At Iva Bell Hot Springs the sunrise point swings a long way through the year: about 59° (ENE) at the June solstice and 120° (ESE) in late December. Sunset moves from 301° (WNW) in June to 241° (WSW) in December, and the midday sun climbs to 76° in summer but only 29° in winter.
| Date | Sunrise | Azimuth | Sunset | Azimuth | Noon sun | Daylight |
|---|---|---|---|---|---|---|
| March equinox (Mar 20) | 7:00 AM | 90° E | 7:08 PM | 271° W | 52° | 12h 08m |
| June solstice (Jun 21) | 5:36 AM | 59° ENE | 8:21 PM | 301° WNW | 76° | 14h 45m |
| September equinox (Sep 22) | 6:45 AM | 89° E | 6:55 PM | 271° W | 53° | 12h 10m |
| December solstice (Dec 21) | 7:08 AM | 120° ESE | 4:42 PM | 241° WSW | 29° | 9h 34m |
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
Steam is most visible on cold mornings; backlight from a low sun makes rising steam glow.
| Month (15th) | Blue hour starts | Sunrise | Golden hour ends | Golden hour starts | Sunset | Blue hour ends | Daylight |
|---|---|---|---|---|---|---|---|
| January | 6:42 AM | 7:10 AM | 7:50 AM | 4:22 PM | 5:02 PM | 5:30 PM | 9h 52m |
| February | 6:20 AM | 6:46 AM | 7:23 AM | 5:00 PM | 5:36 PM | 6:03 PM | 10h 50m |
| March | 6:42 AM | 7:08 AM | 7:43 AM | 6:29 PM | 7:04 PM | 7:30 PM | 11h 56m |
| April | 5:55 AM | 6:22 AM | 6:57 AM | 6:57 PM | 7:32 PM | 7:59 PM | 13h 10m |
| May | 5:18 AM | 5:48 AM | 6:25 AM | 7:22 PM | 7:59 PM | 8:28 PM | 14h 11m |
| June | 5:04 AM | 5:35 AM | 6:14 AM | 7:41 PM | 8:20 PM | 8:51 PM | 14h 44m |
| July | 5:17 AM | 5:47 AM | 6:26 AM | 7:40 PM | 8:18 PM | 8:48 PM | 14h 30m |
| August | 5:45 AM | 6:13 AM | 6:49 AM | 7:14 PM | 7:50 PM | 8:18 PM | 13h 37m |
| September | 6:13 AM | 6:39 AM | 7:13 AM | 6:31 PM | 7:06 PM | 7:32 PM | 12h 27m |
| October | 6:39 AM | 7:05 AM | 7:40 AM | 5:45 PM | 6:20 PM | 6:47 PM | 11h 15m |
| November | 6:09 AM | 6:37 AM | 7:15 AM | 4:08 PM | 4:47 PM | 5:14 PM | 10h 10m |
| December | 6:35 AM | 7:05 AM | 7:45 AM | 3:59 PM | 4:40 PM | 5:09 PM | 9h 35m |
Local time (America/Los Angeles), 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 Iva Bell Hot Springs, the Milky Way core is visible in a dark sky from March through September. June gives the longest window (about 5.3 hours on a moonless night), and the core peaks around 24° 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 | — | -1° | — |
| February | 4:54 AM – 5:14 AM | 0.3 | 13° | SE → SE |
| March | 4:01 AM – 5:31 AM | 1.5 | 20° | SE → SSE |
| April | 2:04 AM – 4:44 AM | 2.7 | 23° | SE → S |
| May | 12:03 AM – 3:53 AM | 3.8 | 24° | SE → S |
| June | 10:13 PM – 3:33 AM | 5.3 | 24° | SE → SSW |
| July | 10:07 PM – 2:07 AM | 4.0 | 24° | SSE → SW |
| August | 9:27 PM – 12:07 AM | 2.7 | 23° | S → SW |
| September | 8:34 PM – 10:04 PM | 1.5 | 20° | SSW → SW |
| October | 7:47 PM – 8:07 PM | 0.3 | 13° | SW → SW |
| November | Below 10° in darkness | — | 1° | — |
| December | Below 10° in darkness | — | -19° | — |
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 ≈ 21.68 mag/arcsec².
Weather & best season
Long-term NASA satellite data for this area show August as the clearest month (about 15% average cloud cover) and December as the cloudiest (54%). July is the warmest month and December 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 | 60 | 64 | 67 | 72 | 86 | 91 | 96 | 91 | 90 | 82 | 74 | 62 |
| Low °F | -9 | -7 | -4 | -3 | 15 | 24 | 39 | 34 | 23 | 14 | -9 | -12 |
| Precip. (in) | 4.4 | 4.7 | 3.7 | 2.4 | 1.3 | 0.4 | 0.4 | 0.2 | 0.2 | 1.4 | 2.4 | 4.8 |
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 hot spring
- A polarizer brings out the colors of mineral terraces and microbial mats.
- Respect bathers' privacy: ask before including people at soaking pools.
- Wind direction determines where steam drifts; shoot from the upwind side to see the pool.
- Condensation forms quickly on lenses; let gear acclimate and carry a cloth.
- Tell someone where you're going in remote areas and carry the ten essentials.
Season: Winter gives the most dramatic steam; some primitive springs are only accessible in summer.
Suggested gear: Circular polarizer, Lens cloth, Telephoto for distant pools. Work out exposures with the depth of field, ND filter and NPF rule calculators.
Nearby photo spots
Other locations within 25 km of Iva Bell Hot Springs, closest first.
Lake
Lake
Waterfall
Waterfall
Natural ArchNatural Arch
Hot Spring
Lake
Mountain PeakCampgrounds nearby (Recreation.gov)
- Coldwater Campground - Inyo Nf (Ca)8.3 km (5.2 mi) · reservable
- Lake Mary Campground8.9 km (5.5 mi) · reservable
- Twin Lakes Campground9.8 km (6.1 mi) · reservable
- Pumice Flat Group Camp13.4 km (8.3 mi) · reservable
- Sherwin Creek13.7 km (8.5 mi) · reservable
FAQ
When is the best time to photograph Iva Bell Hot Springs?
What time is golden hour at Iva Bell Hot Springs?
Where does the sun rise and set at Iva Bell Hot Springs?
Can you see the Milky Way from Iva Bell Hot Springs?
Do you need a permit to photograph at Iva Bell Hot Springs?
How far is Iva Bell Hot Springs from Mammoth Lakes?
Sources
Location data: Wikidata, 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.