Water temperature in Petersburg
Sea surface temperature · updated today, Thursday, October 29, at 1:26 am (AKDT)- Today
- 43.9–44.6 °F
- Air today
- 31 / 44 °F
- Wed 4
- 43.4 °F
- Wetsuit
- 6/5 mm with hood, booties and gloves
Today the water in Petersburg is 44.4 °F and ranges 43.9–44.6 °F through the day, with the air between 31 °F and 44 °F. It cools over the next few days: about 43.4 °F by Wednesday 4.
Measured by satellite
This is the temperature satellites measured 2 days ago in the water just below the surface, at the nearest point of sea to Petersburg (0.6 mi away), from NASA's MUR analysis, which sees the water in 1 km detail. It isn't a forecast: the big figure above is what a model gives for right now. On sunny afternoons the top of the water can be a little warmer.
Big gap with the model, which gives 44.4 °F right now (2.9 °F lower). The forecast is a calculation and this is a measurement: the water is probably warmer than the model says.
Satellite: NASA MUR (JPL MUR MEaSUREs, PO.DAAC), doi:10.5067/GHGMR-4FJ04. Sources and licenses
The water over the next few days
- Today
- Fri 30
- Sat 31
- Sun 1
- Mon 2
- Tue 3
- Wed 4
- Thu 5
- Fri 6
Water over the last 60 days
Over these days it has dropped 13.1 °F (from August 30).
Daily average and its range (low and high). The dotted line is the forecast.
Water and air, day by day
| Day | Water | Air | Max wave |
|---|---|---|---|
| Today | 43.9–44.6 °F | 31 / 44 °F | 0.1 ft |
| Fri 30 | 43.0–43.7 °F | 32 / 45 °F | 0.0 ft |
| Sat 31 | 42.4–43.0 °F | 32 / 46 °F | 0.2 ft |
| Sun 1 | 43.0–43.9 °F | 40 / 44 °F | 0.9 ft |
| Mon 2 | 43.9–44.2 °F | 40 / 45 °F | 0.1 ft |
| Tue 3 | 43.5–43.9 °F | 39 / 46 °F | 0.1 ft |
| Wed 4 | 43.2–43.7 °F | 43 / 53 °F | 0.0 ft |
Which wetsuit to wear
| Water | Wetsuit | How it feels |
|---|---|---|
| < 52 °F | 6/5 mm with hood, booties and gloves | Very cold: full kit only |
| 52°–57 °F | 5/4 mm with booties | Cold: takes your breath away |
| 57°–63 °F | 4/3 mm | Cool |
| 63°–66 °F | 3/2 mm | Mild |
| 66°–72 °F | Shorty (springsuit) | Pleasant |
| 72°–75 °F | Rash guard or top | Very pleasant |
| > 75 °F | No wetsuit | Warm |
A rough guide: it depends on the wind, how long you stay in and each person.
Fish are cold-blooded: the water sets their activity. Sudden temperature changes usually put them off the bite; with steady water, activity is more regular.
Previous days
The water over the last 60 days.
| Day | Water | Low / high |
|---|---|---|
| Wed 28 | 45.5 °F | 44.8–45.7 °F |
| Tue 27 | 45.0 °F | 44.8–45.5 °F |
| Mon 26 | 44.1 °F | 43.5–45.0 °F |
| Sun 25 | 44.1 °F | 43.5–44.2 °F |
| Sat 24 | 44.1 °F | 43.9–44.4 °F |
| Fri 23 | 44.4 °F | 44.1–44.8 °F |
| Thu 22 | 45.3 °F | 44.8–45.5 °F |
Show all 60 days
| Day | Water | Low / high |
|---|---|---|
| Wed 21 | 45.3 °F | 45.3–45.7 °F |
| Tue 20 | 46.0 °F | 45.5–46.4 °F |
| Mon 19 | 45.9 °F | 45.5–46.0 °F |
| Sun 18 | 46.4 °F | 46.0–46.6 °F |
| Sat 17 | 46.4 °F | 46.0–46.8 °F |
| Fri 16 | 47.1 °F | 46.8–47.3 °F |
| Thu 15 | 46.4 °F | 45.3–47.1 °F |
| Wed 14 | 45.0 °F | 44.6–45.3 °F |
| Tue 13 | 46.6 °F | 45.0–46.9 °F |
| Mon 12 | 47.5 °F | 47.1–47.7 °F |
| Sun 11 | 47.5 °F | 47.3–47.8 °F |
| Sat 10 | 48.0 °F | 47.3–48.6 °F |
| Fri 9 | 48.7 °F | 48.4–49.5 °F |
| Thu 8 | 49.5 °F | 49.1–49.8 °F |
| Wed 7 | 49.5 °F | 49.1–49.8 °F |
| Tue 6 | 51.3 °F | 49.8–52.0 °F |
| Mon 5 | 51.4 °F | 51.3–51.6 °F |
| Sun 4 | 51.1 °F | 50.7–51.4 °F |
| Sat 3 | 50.7 °F | 50.4–50.9 °F |
| Fri 2 | 50.5 °F | 50.0–50.9 °F |
| Thu 1 | 50.7 °F | 50.4–51.1 °F |
| Wed 30 | 50.2 °F | 49.6–50.7 °F |
| Tue 29 | 52.2 °F | 50.4–52.7 °F |
| Mon 28 | 52.5 °F | 52.2–52.9 °F |
| Sun 27 | 52.2 °F | 52.0–52.3 °F |
| Sat 26 | 52.0 °F | 51.8–52.3 °F |
| Fri 25 | 52.2 °F | 51.6–52.7 °F |
| Thu 24 | 52.7 °F | 52.3–53.1 °F |
| Wed 23 | 52.7 °F | 52.7–52.9 °F |
| Tue 22 | 54.3 °F | 52.9–54.9 °F |
| Mon 21 | 55.4 °F | 54.9–55.8 °F |
| Sun 20 | 55.8 °F | 55.6–55.9 °F |
| Sat 19 | 55.4 °F | 55.2–55.8 °F |
| Fri 18 | 55.2 °F | 55.0–55.4 °F |
| Thu 17 | 55.8 °F | 55.4–56.3 °F |
| Wed 16 | 55.4 °F | 55.2–55.8 °F |
| Tue 15 | 56.8 °F | 55.4–57.9 °F |
| Mon 14 | 57.4 °F | 56.8–57.9 °F |
| Sun 13 | 57.0 °F | 56.1–57.9 °F |
| Sat 12 | 56.8 °F | 55.9–57.7 °F |
| Fri 11 | 56.5 °F | 55.6–57.6 °F |
| Thu 10 | 56.8 °F | 56.5–57.4 °F |
| Wed 9 | 57.2 °F | 57.0–57.6 °F |
| Tue 8 | 58.3 °F | 57.0–58.8 °F |
| Mon 7 | 58.5 °F | 57.9–59.2 °F |
| Sun 6 | 58.6 °F | 57.9–59.4 °F |
| Sat 5 | 58.5 °F | 57.6–59.5 °F |
| Fri 4 | 57.9 °F | 56.8–59.2 °F |
| Thu 3 | 57.6 °F | 56.5–58.6 °F |
| Wed 2 | 56.8 °F | 56.1–57.9 °F |
| Tue 1 | 57.6 °F | 56.5–58.1 °F |
| Mon 31 | 58.5 °F | 58.1–58.8 °F |
| Sun 30 | 58.6 °F | 58.3–59.4 °F |
It's the daily analysis from Météo-France / Copernicus Marine (satellites, buoys and model), not a buoy reading at this spot.
Questions about the water in PetersburgQuestions
What's the water temperature today in Petersburg?
44.4 °F; through the day it ranges 43.9–44.6 °F.
Will the water get warmer or colder?
It cools over the next few days: about 43.4 °F by Wednesday 4.
Which wetsuit do I need today?
With the water as it is today, 6/5 mm with hood, booties and gloves (very cold: full kit only). It's a rough guide: it depends on the wind and each person.
More about Petersburg today
Water temperature near Petersburg
- Wrangell 47.3 °F · 32 mi
- Chichagof Pass 46.4 °F · 37 mi
- Kake 45.3 °F · 39 mi
- Point Baker 46.2 °F · 41 mi
- Coffman Cove 46.2 °F · 55 mi
- Naukati Bay 46.2 °F · 65 mi
Only places with a different forecast: spots a few miles apart share the same model cell and wouldn't add anything.
Learn more
Sea surface temperature: Open-Meteo with Météo-France / Copernicus Marine, CC BY 4.0; grid point 11 mi away. Near the shore, in coves and estuaries, the water can be a little colder or warmer.
Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 1:26 am (local time).
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