Geographic and Climatic Data for Iquitos Peru

by Captain Bill

Geographic and Climatic Data for Iquitos Peru

This data for Iquitos Peru is from the NASA Langley Atmospheric Science Data Research Center.

Latitude: Minus 3.75 degrees south of the equator.

The altitude above sea level is approximately 350 feet.

The Coordinated Universal Time of Peru is UTC-5, the same as Florida and New York, Eastern Standard Time.

The time difference between the longest day and the shortest day is only 18 minutes.

The temperature measured by ° F averaged from 22 years of data per month:

(Jan. 82.09) (Feb. 81.86) (Mar. 82.60) (Apr. 82.06) (May 82.42) (June 82.20)

(July 82.04) (Aug 83.55) (Sept. 85.78) (Oct. 86.59) (Nov. 84.88) (Dec. 82.87)

The average rainfall at the Iquitos Port is 103 inches per year. March and April have slightly more rain on a 10 year average, and July and August have slightly less than average, but contrary to popular belief there is very little difference in month to month precipitation in Iquitos. The water level of the river fluctuates by as much as 40 feet per year, triggered by rainfall and snow melt on the east slopes of the Andes.

Geographic and Climatic Data for Iquitos Peru

Bill Grimes,  Welcome to Iquitos PeruDawn on the Amazon Tours and Cruises 

{ 2 comments… read them below or add one }

1 Wayne May 20, 2008 at 4:49 pm

Is the river level rising or falling in Sept (circa Iquitos)? And, about how fast
is the river flowing at that time? Thanks

2 Bill May 20, 2008 at 6:05 pm

Hi Wayne, I bet you are in the Great River Amazon Raft Race. Way to do your homework.

There are two charts on the Captains Blog that show the rise and fall of the Amazon River over the course of the year.

The most legible one is from 2007 Water Level is Dropping, Iquitos Peru. Above the graph is the explanation of the colored lines. It is difficult to make out the months at the bottom but know that the lowest point on all the lines are in September.

The most recent chart is Water Level, Amazon River, May 1st, Iquitos Peru. On this chart an explanation of the color coded lines is below the chart. The months are even more difficult to read but again, know that the lowest the lines go on the chart are in September.

The current speed always depends on where you are in the channel. On the outside bend, called the “cut bank” where the water is forced, will nearly always be the fastest, 8 to 10 mph, the shallow inside of the bend where the sand bar or mud bar is, called the “slip slope” will nearly always be the slowest, near zero, sometimes with a back wash.

A person on a raft or boat always wants to follow the strongest current downstream. That usually means crossing the river to be on the “cut bank” side, zig, zagging your way down stream in the strongest current. Your mantra should be “going farther, goes faster”. Never be tempted to take a short cut on the “slip slope” side. You will lose speed, time, placement, and distance.

I hope this is valuable information for you.

Bill Grimes

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