Live UV forecast for 137 cities
Bangladesh stretches from 20.8583° to 26.3334° latitude (Northern hemisphere), so UV conditions differ a lot from region to region. The clear-sky UV index reaches ≈ 9.2 in Cox's Bazar (peak in May), while in Thakurgaon the yearly maximum is only ≈ 8.8.
| Zone | Cities | J | F | M | A | M | J | J | A | S | O | N | D | Peak |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tropical | 61 | 6.1 | 7 | 8 | 8.8 | 9 | 9.1 | 9.1 | 8.9 | 8.5 | 7.7 | 6.7 | 6 | 9.1 |
| Subtropical | 76 | 5.7 | 6.6 | 7.7 | 8.5 | 8.9 | 8.9 | 8.9 | 8.7 | 8.2 | 7.3 | 6.4 | 5.6 | 8.9 |
Calculated clear-sky noon peaks at the average latitude of each zone. Real values vary with clouds, altitude and ozone.
Using Dhaka as a reference: the UV index reaches 6+ in February, March, April, May, June, July, August, September, October and November. In the sunniest zones (see table) SPF 30–50+ is needed almost year-round; in the mildest — only in late spring and summer.
The calculated clear-sky maximum is ≈ 9.2 — in Cox's Bazar around May. Values above this occur only near the equator and in high mountains.
Cox's Bazar (peak ≈ 9.2), followed by Teknaf and Ayla Patakata. The mildest sun is in Thakurgaon (max ≈ 8.8).
In Dhaka and similar latitudes the UV reaches 6+ in February, March, April, May, June, July, August, September, October and November: use SPF 30–50+ on sunny days. Protection is advised from UV 3.
No — the local maximum is ≈ 9.2. UV 11+ occurs only near the equator, in deserts and high mountains.