# Top Science Websites in Japan
The top 10 most visited science websites in Japan by Ahrefs organic search traffic estimates. Updated monthly.
September 2025
| Rank | Website | Search traffic | ||
|---|---|---|---|---|
| 1 | tenki.jp |
38.4M
-4.4M
|
-4.4M | |
| 2 | weathernews.jp |
35.1M
-2.5M
|
-2.5M | |
| 3 | ↑1 | jma.go.jp |
15M
-2.8M
|
-2.8M |
| 4 | ↑1 | kegg.jp |
6M
-575.6K
|
-575.6K |
| 5 | ↓2 | openai.com |
2.8M
-23.4M
|
-23.4M |
| 6 | earth.jp |
1.8M
-363.9K
|
-363.9K | |
| 7 | ↑1 | mtgec.jp |
1.7M
+35.5K
|
+35.5K |
| 8 | ↓1 | rad-ar.or.jp |
1.7M
-90.6K
|
-90.6K |
| 9 | ↑1 | n-kishou.co.jp |
1.4M
+229.4K
|
+229.4K |
| 10 | ↑1 | jma-net.go.jp |
1.2M
+68.2K
|
+68.2K |
## Top Trending Websites
Websites that changed positions within the top 100 rankings in September 2025.
Trending up
#3
jma.go.jp
↑1
#4
kegg.jp
↑1
#7
mtgec.jp
↑1
↑1
#10
jma-net.go.jp
↑1
#1
tenki.jp
#6
earth.jp
#8
rad-ar.or.jp
↑1
#5
openai.com
↑2
Trending down
#5
openai.com
↓2
#8
rad-ar.or.jp
↓1
#1
tenki.jp
#6
earth.jp
#3
jma.go.jp
↓1
#4
kegg.jp
↓1
#7
mtgec.jp
↓1
↓1
#10
jma-net.go.jp
↓1