In Nauru the climate is equatorial, hot and humid throughout the year, with constant rains, and without a dry season. It is no coincidence that this small island is located at the Equator. We can still distinguish a rainier period from December to April, when more than 150 millimetres (6 inches) per month fall, with a maximum 250 mm (10 in) or more per month from December to February, and a less rainy period from May to November, when, however, still from 100 to 150 mm (4 to 6 in) of rain per month fall.
Precipitation amounts to around 2,000 mm (80 in) per year. Rainfall can vary from year to year, so that sometimes it can rain a lot even in the least rainy season; however, June is the month that historically has had the lowest rainfall records. The rains occur in the form of showers or thunderstorms, which may be intense, but do not last long, so that the sun has always a chance to shine.
Here is the average precipitation.
Average precipitation - Nauru

Nauru	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Nauru	J	F	M	A	M	J	J	A	S	O	N	D	Y
Prec. (mm)	280	250	190	190	120	110	150	130	120	100	120	260	2020
Prec.(in)	11	9.8	7.5	7.5	4.7	4.3	5.9	5.1	4.7	3.9	4.7	10.2	79.5
Days	16	14	13	11	9	9	12	14	11	10	13	15	147

The average temperature is extremely stable during the year: lows hover around 24/25 °C (75/77 °F), and highs are around 30 °C (86 °F). There is just a slight rise in temperatures between October and December. Sometimes, however, the temperature can reach 35 °C (95 °F), from November to April.
Here are the average temperatures.
Average temperatures - Nauru

Nauru	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Nauru	J	F	M	A	M	J	J	A	S	O	N	D
Min (°C)	24	24	24	24	25	25	24	24	24	25	25	24
Max (°C)	30	30	30	30	30	30	30	30	30	31	31	30
Min (°F)	75	75	75	75	77	77	75	75	75	77	77	75
Max (°F)	86	86	86	86	86	86	86	86	86	88	88	86

Nauru is outside the path of tropical cyclones, because at the Equator there's no Coriolis effect, which is necessary to give life to cyclonic vortices.



The sea in Nauru is pleasantly warm all year round, and has a very stable temperature, as can be seen in the following table.
Sea temperature - Nauru

Nauru	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Nauru	J	F	M	A	M	J	J	A	S	O	N	D
Sea (°C)	29	29	29	29	29	29	29	29	29	29	29	29
Sea (°F)	84	84	84	84	84	84	84	84	84	84	84	84

The best time to visit Nauru runs from May to November, being the driest, or rather the least rainy, because showers and thunderstorms may occur even in this period. The period from May to August is the best, because it is slightly less sultry. Since it is not affected by tropical cyclones, Nauru can be visited throughout the year; anyway, the worst period runs from December to February, being the rainiest.
The natural environment of Nauru is still suffering because of the intense mining of phosphates made in the past, and the island is not well equipped for tourism; however, as we have seen the sea is pleasantly warm all year round for swimming and diving.


All year round, tropics-friendly, loose fitting clothing, sun hat, a scarf for the breeze, a light sweatshirt for the evening, light raincoat or umbrella.