Nosara Sea Temperature in September

Looking to find out what the average sea water temperature in Nosara is for September? Find out what the lowest, highest, and average water temperatures are for Nosara over the past 10 years.

Average water temperature in Nosara for September

The average, high, and low temperatures below should help you if you can swim in the water in Nosara in September.

28.94° C

(84.08° F)

highest: 30.57° C (87.03° F)
lowest: 27.56° C (81.61° F)

This water temperature is comparable to that of a swimming pool, but it might be higher than most open water swimmers prefer for serious swimming. Make sure to drink plenty of water before and after swimming and don't wear a wetsuit to avoid overheating.

Water temperature range by day in September in Nosara

The chart below shows the range of low and high temperatures by day for the month of September in Nosara.

Water temperatures for September in Nosara in recent years

Day	2024	2023	2022	2021
1	0° C	30.06° C	28.6° C	28.21° C
2	0° C	29.75° C	28.64° C	28.42° C
3	0° C	29.85° C	28.61° C	28.49° C
4	0° C	29.82° C	28.65° C	28.46° C
5	0° C	30.04° C	28.78° C	28.56° C
6	0° C	30.1° C	28.88° C	28.46° C
7	0° C	30.09° C	28.97° C	28.19° C
8	0° C	29.99° C	29.13° C	27.92° C
9	0° C	29.93° C	29.03° C	27.62° C
10	0° C	30.21° C	28.85° C	27.77° C
11	0° C	30.09° C	29.29° C	27.79° C
12	0° C	30.08° C	29.61° C	27.67° C
13	0° C	30.22° C	29.26° C	27.65° C
14	0° C	30.14° C	29.11° C	27.96° C
15	0° C	30.14° C	29.1° C	28.33° C
16	0° C	30.19° C	28.9° C	28.57° C
17	0° C	30.33° C	28.75° C	28.66° C
18	0° C	30.37° C	28.7° C	28.92° C
19	0° C	30.15° C	28.67° C	28.93° C
20	0° C	30.01° C	28.66° C	28.89° C
21	0° C	30.2° C	28.67° C	28.88° C
22	0° C	30.33° C	28.66° C	28.7° C
23	0° C	30.53° C	28.7° C	28.5° C
24	0° C	30.54° C	28.72° C	28.08° C
25	0° C	30.45° C	28.67° C	29.03° C
26	0° C	30.35° C	28.86° C	29.19° C
27	0° C	30.1° C	28.85° C	29.3° C
28	0° C	30.07° C	28.5° C	29.3° C
29	0° C	30.02° C	28.7° C	28.89° C
30	0° C	29.98° C	28.8° C	28.56° C